Nation Notes module contributed by Z&H Healthcare.

[openemr.git] / library / custom_template / ckeditor / _source / plugins / selection / plugin.js

/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

(function()
{
        // #### checkSelectionChange : START

        // The selection change check basically saves the element parent tree of
        // the current node and check it on successive requests. If there is any
        // change on the tree, then the selectionChange event gets fired.
        function checkSelectionChange()
        {
                try
                {
                        // In IE, the "selectionchange" event may still get thrown when
                        // releasing the WYSIWYG mode, so we need to check it first.
                        var sel = this.getSelection();
                        if ( !sel || !sel.document.getWindow().$ )
                                return;

                        var firstElement = sel.getStartElement();
                        var currentPath = new CKEDITOR.dom.elementPath( firstElement );

                        if ( !currentPath.compare( this._.selectionPreviousPath ) )
                        {
                                this._.selectionPreviousPath = currentPath;
                                this.fire( 'selectionChange', { selection : sel, path : currentPath, element : firstElement } );
                        }
                }
                catch (e)
                {}
        }

        var checkSelectionChangeTimer,
                checkSelectionChangeTimeoutPending;

        function checkSelectionChangeTimeout()
        {
                // Firing the "OnSelectionChange" event on every key press started to
                // be too slow. This function guarantees that there will be at least
                // 200ms delay between selection checks.

                checkSelectionChangeTimeoutPending = true;

                if ( checkSelectionChangeTimer )
                        return;

                checkSelectionChangeTimeoutExec.call( this );

                checkSelectionChangeTimer = CKEDITOR.tools.setTimeout( checkSelectionChangeTimeoutExec, 200, this );
        }

        function checkSelectionChangeTimeoutExec()
        {
                checkSelectionChangeTimer = null;

                if ( checkSelectionChangeTimeoutPending )
                {
                        // Call this with a timeout so the browser properly moves the
                        // selection after the mouseup. It happened that the selection was
                        // being moved after the mouseup when clicking inside selected text
                        // with Firefox.
                        CKEDITOR.tools.setTimeout( checkSelectionChange, 0, this );

                        checkSelectionChangeTimeoutPending = false;
                }
        }

        // #### checkSelectionChange : END

        var selectAllCmd =
        {
                modes : { wysiwyg : 1, source : 1 },
                exec : function( editor )
                {
                        switch ( editor.mode )
                        {
                                case 'wysiwyg' :
                                        editor.document.$.execCommand( 'SelectAll', false, null );
                                        // Force triggering selectionChange (#7008)
                                        editor.forceNextSelectionCheck();
                                        editor.selectionChange();
                                        break;
                                case 'source' :
                                        // Select the contents of the textarea
                                        var textarea = editor.textarea.$;
                                        if ( CKEDITOR.env.ie )
                                                textarea.createTextRange().execCommand( 'SelectAll' );
                                        else
                                        {
                                                textarea.selectionStart = 0;
                                                textarea.selectionEnd = textarea.value.length;
                                        }
                                        textarea.focus();
                        }
                },
                canUndo : false
        };

        CKEDITOR.plugins.add( 'selection',
        {
                init : function( editor )
                {
                        editor.on( 'contentDom', function()
                                {
                                        var doc = editor.document,
                                                body = doc.getBody(),
                                                html = doc.getDocumentElement();

                                        if ( CKEDITOR.env.ie )
                                        {
                                                // Other browsers don't loose the selection if the
                                                // editor document loose the focus. In IE, we don't
                                                // have support for it, so we reproduce it here, other
                                                // than firing the selection change event.

                                                var savedRange,
                                                        saveEnabled,
                                                        restoreEnabled = 1;

                                                // "onfocusin" is fired before "onfocus". It makes it
                                                // possible to restore the selection before click
                                                // events get executed.
                                                body.on( 'focusin', function( evt )
                                                        {
                                                                // If there are elements with layout they fire this event but
                                                                // it must be ignored to allow edit its contents #4682
                                                                if ( evt.data.$.srcElement.nodeName != 'BODY' )
                                                                        return;

                                                                // If we have saved a range, restore it at this
                                                                // point.
                                                                if ( savedRange )
                                                                {
                                                                        // Range restored here might invalidate the DOM structure thus break up
                                                                        // the locked selection, give it up. (#6083)
                                                                        var lockedSelection = doc.getCustomData( 'cke_locked_selection' );
                                                                        if ( restoreEnabled && !lockedSelection )
                                                                        {
                                                                                // Well not break because of this.
                                                                                try
                                                                                {
                                                                                        savedRange.select();
                                                                                }
                                                                                catch (e)
                                                                                {}
                                                                        }

                                                                        savedRange = null;
                                                                }
                                                        });

                                                body.on( 'focus', function()
                                                        {
                                                                // Enable selections to be saved.
                                                                saveEnabled = 1;

                                                                saveSelection();
                                                        });

                                                body.on( 'beforedeactivate', function( evt )
                                                        {
                                                                // Ignore this event if it's caused by focus switch between
                                                                // internal editable control type elements, e.g. layouted paragraph. (#4682)
                                                                if ( evt.data.$.toElement )
                                                                        return;

                                                                // Disable selections from being saved.
                                                                saveEnabled = 0;
                                                                restoreEnabled = 1;
                                                        });

                                                // IE before version 8 will leave cursor blinking inside the document after
                                                // editor blurred unless we clean up the selection. (#4716)
                                                if ( CKEDITOR.env.ie && CKEDITOR.env.version < 8 )
                                                {
                                                        editor.on( 'blur', function( evt )
                                                        {
                                                                // Try/Catch to avoid errors if the editor is hidden. (#6375)
                                                                try
                                                                {
                                                                        editor.document && editor.document.$.selection.empty();
                                                                }
                                                                catch (e) {}
                                                        });
                                                }

                                                // Listening on document element ensures that
                                                // scrollbar is included. (#5280)
                                                html.on( 'mousedown', function()
                                                {
                                                        // Lock restore selection now, as we have
                                                        // a followed 'click' event which introduce
                                                        // new selection. (#5735)
                                                        restoreEnabled = 0;
                                                });

                                                html.on( 'mouseup', function()
                                                {
                                                        restoreEnabled = 1;
                                                });

                                                // In IE6/7 the blinking cursor appears, but contents are
                                                // not editable. (#5634)
                                                if ( CKEDITOR.env.ie && ( CKEDITOR.env.ie7Compat || CKEDITOR.env.version < 8 || CKEDITOR.env.quirks ) )
                                                {
                                                        // The 'click' event is not fired when clicking the
                                                        // scrollbars, so we can use it to check whether
                                                        // the empty space following <body> has been clicked.
                                                        html.on( 'click', function( evt )
                                                        {
                                                                if ( evt.data.getTarget().getName() == 'html' )
                                                                        editor.getSelection().getRanges()[ 0 ].select();
                                                        });
                                                }

                                                var scroll;
                                                // IE fires the "selectionchange" event when clicking
                                                // inside a selection. We don't want to capture that.
                                                body.on( 'mousedown', function( evt )
                                                {
                                                        // IE scrolls document to top on right mousedown
                                                        // when editor has no focus, remember this scroll
                                                        // position and revert it before context menu opens. (#5778)
                                                        if ( evt.data.$.button == 2 )
                                                        {
                                                                var sel = editor.document.$.selection;
                                                                if ( sel.type == 'None' )
                                                                        scroll = editor.window.getScrollPosition();
                                                        }
                                                        disableSave();
                                                });

                                                body.on( 'mouseup',
                                                        function( evt )
                                                        {
                                                                // Restore recorded scroll position when needed on right mouseup.
                                                                if ( evt.data.$.button == 2 && scroll )
                                                                {
                                                                        editor.document.$.documentElement.scrollLeft = scroll.x;
                                                                        editor.document.$.documentElement.scrollTop = scroll.y;
                                                                }
                                                                scroll = null;

                                                                saveEnabled = 1;
                                                                setTimeout( function()
                                                                        {
                                                                                saveSelection( true );
                                                                        },
                                                                        0 );
                                                        });

                                                body.on( 'keydown', disableSave );
                                                body.on( 'keyup',
                                                        function()
                                                        {
                                                                saveEnabled = 1;
                                                                saveSelection();
                                                        });


                                                // IE is the only to provide the "selectionchange"
                                                // event.
                                                doc.on( 'selectionchange', saveSelection );

                                                function disableSave()
                                                {
                                                        saveEnabled = 0;
                                                }

                                                function saveSelection( testIt )
                                                {
                                                        if ( saveEnabled )
                                                        {
                                                                var doc = editor.document,
                                                                        sel = editor.getSelection(),
                                                                        nativeSel = sel && sel.getNative();

                                                                // There is a very specific case, when clicking
                                                                // inside a text selection. In that case, the
                                                                // selection collapses at the clicking point,
                                                                // but the selection object remains in an
                                                                // unknown state, making createRange return a
                                                                // range at the very start of the document. In
                                                                // such situation we have to test the range, to
                                                                // be sure it's valid.
                                                                if ( testIt && nativeSel && nativeSel.type == 'None' )
                                                                {
                                                                        // The "InsertImage" command can be used to
                                                                        // test whether the selection is good or not.
                                                                        // If not, it's enough to give some time to
                                                                        // IE to put things in order for us.
                                                                        if ( !doc.$.queryCommandEnabled( 'InsertImage' ) )
                                                                        {
                                                                                CKEDITOR.tools.setTimeout( saveSelection, 50, this, true );
                                                                                return;
                                                                        }
                                                                }

                                                                // Avoid saving selection from within text input. (#5747)
                                                                var parentTag;
                                                                if ( nativeSel && nativeSel.type && nativeSel.type != 'Control'
                                                                        && ( parentTag = nativeSel.createRange() )
                                                                        && ( parentTag = parentTag.parentElement() )
                                                                        && ( parentTag = parentTag.nodeName )
                                                                        && parentTag.toLowerCase() in { input: 1, textarea : 1 } )
                                                                {
                                                                        return;
                                                                }

                                                                savedRange = nativeSel && sel.getRanges()[ 0 ];

                                                                checkSelectionChangeTimeout.call( editor );
                                                        }
                                                }
                                        }
                                        else
                                        {
                                                // In other browsers, we make the selection change
                                                // check based on other events, like clicks or keys
                                                // press.

                                                doc.on( 'mouseup', checkSelectionChangeTimeout, editor );
                                                doc.on( 'keyup', checkSelectionChangeTimeout, editor );
                                        }
                                });

                        // Clear the cached range path before unload. (#7174)
                        editor.on( 'contentDomUnload', editor.forceNextSelectionCheck, editor );

                        editor.addCommand( 'selectAll', selectAllCmd );
                        editor.ui.addButton( 'SelectAll',
                                {
                                        label : editor.lang.selectAll,
                                        command : 'selectAll'
                                });

                        editor.selectionChange = checkSelectionChangeTimeout;
                }
        });

        /**
         * Gets the current selection from the editing area when in WYSIWYG mode.
         * @returns {CKEDITOR.dom.selection} A selection object or null if not on
         *              WYSIWYG mode or no selection is available.
         * @example
         * var selection = CKEDITOR.instances.editor1.<b>getSelection()</b>;
         * alert( selection.getType() );
         */
        CKEDITOR.editor.prototype.getSelection = function()
        {
                return this.document && this.document.getSelection();
        };

        CKEDITOR.editor.prototype.forceNextSelectionCheck = function()
        {
                delete this._.selectionPreviousPath;
        };

        /**
         * Gets the current selection from the document.
         * @returns {CKEDITOR.dom.selection} A selection object.
         * @example
         * var selection = CKEDITOR.instances.editor1.document.<b>getSelection()</b>;
         * alert( selection.getType() );
         */
        CKEDITOR.dom.document.prototype.getSelection = function()
        {
                var sel = new CKEDITOR.dom.selection( this );
                return ( !sel || sel.isInvalid ) ? null : sel;
        };

        /**
         * No selection.
         * @constant
         * @example
         * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_NONE )
         *     alert( 'Nothing is selected' );
         */
        CKEDITOR.SELECTION_NONE         = 1;

        /**
         * Text or collapsed selection.
         * @constant
         * @example
         * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_TEXT )
         *     alert( 'Text is selected' );
         */
        CKEDITOR.SELECTION_TEXT         = 2;

        /**
         * Element selection.
         * @constant
         * @example
         * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_ELEMENT )
         *     alert( 'An element is selected' );
         */
        CKEDITOR.SELECTION_ELEMENT      = 3;

        /**
         * Manipulates the selection in a DOM document.
         * @constructor
         * @example
         */
        CKEDITOR.dom.selection = function( document )
        {
                var lockedSelection = document.getCustomData( 'cke_locked_selection' );

                if ( lockedSelection )
                        return lockedSelection;

                this.document = document;
                this.isLocked = 0;
                this._ =
                {
                        cache : {}
                };

                /**
                 * IE BUG: The selection's document may be a different document than the
                 * editor document. Return null if that's the case.
                 */
                if ( CKEDITOR.env.ie )
                {
                        var range = this.getNative().createRange();
                        if ( !range
                                || ( range.item && range.item(0).ownerDocument != this.document.$ )
                                || ( range.parentElement && range.parentElement().ownerDocument != this.document.$ ) )
                        {
                                this.isInvalid = true;
                        }
                }

                return this;
        };

        var styleObjectElements =
        {
                img:1,hr:1,li:1,table:1,tr:1,td:1,th:1,embed:1,object:1,ol:1,ul:1,
                a:1, input:1, form:1, select:1, textarea:1, button:1, fieldset:1, th:1, thead:1, tfoot:1
        };

        CKEDITOR.dom.selection.prototype =
        {
                /**
                 * Gets the native selection object from the browser.
                 * @function
                 * @returns {Object} The native selection object.
                 * @example
                 * var selection = editor.getSelection().<b>getNative()</b>;
                 */
                getNative :
                        CKEDITOR.env.ie ?
                                function()
                                {
                                        return this._.cache.nativeSel || ( this._.cache.nativeSel = this.document.$.selection );
                                }
                        :
                                function()
                                {
                                        return this._.cache.nativeSel || ( this._.cache.nativeSel = this.document.getWindow().$.getSelection() );
                                },

                /**
                 * Gets the type of the current selection. The following values are
                 * available:
                 * <ul>
                 *              <li>{@link CKEDITOR.SELECTION_NONE} (1): No selection.</li>
                 *              <li>{@link CKEDITOR.SELECTION_TEXT} (2): Text is selected or
                 *                      collapsed selection.</li>
                 *              <li>{@link CKEDITOR.SELECTION_ELEMENT} (3): A element
                 *                      selection.</li>
                 * </ul>
                 * @function
                 * @returns {Number} One of the following constant values:
                 *              {@link CKEDITOR.SELECTION_NONE}, {@link CKEDITOR.SELECTION_TEXT} or
                 *              {@link CKEDITOR.SELECTION_ELEMENT}.
                 * @example
                 * if ( editor.getSelection().<b>getType()</b> == CKEDITOR.SELECTION_TEXT )
                 *     alert( 'Text is selected' );
                 */
                getType :
                        CKEDITOR.env.ie ?
                                function()
                                {
                                        var cache = this._.cache;
                                        if ( cache.type )
                                                return cache.type;

                                        var type = CKEDITOR.SELECTION_NONE;

                                        try
                                        {
                                                var sel = this.getNative(),
                                                        ieType = sel.type;

                                                if ( ieType == 'Text' )
                                                        type = CKEDITOR.SELECTION_TEXT;

                                                if ( ieType == 'Control' )
                                                        type = CKEDITOR.SELECTION_ELEMENT;

                                                // It is possible that we can still get a text range
                                                // object even when type == 'None' is returned by IE.
                                                // So we'd better check the object returned by
                                                // createRange() rather than by looking at the type.
                                                if ( sel.createRange().parentElement )
                                                        type = CKEDITOR.SELECTION_TEXT;
                                        }
                                        catch(e) {}

                                        return ( cache.type = type );
                                }
                        :
                                function()
                                {
                                        var cache = this._.cache;
                                        if ( cache.type )
                                                return cache.type;

                                        var type = CKEDITOR.SELECTION_TEXT;

                                        var sel = this.getNative();

                                        if ( !sel )
                                                type = CKEDITOR.SELECTION_NONE;
                                        else if ( sel.rangeCount == 1 )
                                        {
                                                // Check if the actual selection is a control (IMG,
                                                // TABLE, HR, etc...).

                                                var range = sel.getRangeAt(0),
                                                        startContainer = range.startContainer;

                                                if ( startContainer == range.endContainer
                                                        && startContainer.nodeType == 1
                                                        && ( range.endOffset - range.startOffset ) == 1
                                                        && styleObjectElements[ startContainer.childNodes[ range.startOffset ].nodeName.toLowerCase() ] )
                                                {
                                                        type = CKEDITOR.SELECTION_ELEMENT;
                                                }
                                        }

                                        return ( cache.type = type );
                                },

                /**
                 * Retrieve the {@link CKEDITOR.dom.range} instances that represent the current selection.
                 * Note: Some browsers returns multiple ranges even on a sequent selection, e.g. Firefox returns
                 * one range for each table cell when one or more table row is selected.
                 * @return {Array}
                 * @example
                 * var ranges = selection.getRanges();
                 * alert(ranges.length);
                 */
                getRanges : (function()
                {
                        var func = CKEDITOR.env.ie ?
                                ( function()
                                {
                                        function getNodeIndex( node ) { return new CKEDITOR.dom.node( node ).getIndex(); }

                                        // Finds the container and offset for a specific boundary
                                        // of an IE range.
                                        var getBoundaryInformation = function( range, start )
                                        {
                                                // Creates a collapsed range at the requested boundary.
                                                range = range.duplicate();
                                                range.collapse( start );

                                                // Gets the element that encloses the range entirely.
                                                var parent = range.parentElement();

                                                // Empty parent element, e.g. <i>^</i>
                                                if ( !parent.hasChildNodes() )
                                                        return  { container : parent, offset : 0 };

                                                var siblings = parent.children,
                                                        child,
                                                        testRange = range.duplicate(),
                                                        startIndex = 0,
                                                        endIndex = siblings.length - 1,
                                                        index = -1,
                                                        position,
                                                        distance;

                                                // Binary search over all element childs to test the range to see whether
                                                // range is right on the boundary of one element.
                                                while ( startIndex <= endIndex )
                                                {
                                                        index = Math.floor( ( startIndex + endIndex ) / 2 );
                                                        child = siblings[ index ];
                                                        testRange.moveToElementText( child );
                                                        position = testRange.compareEndPoints( 'StartToStart', range );

                                                        if ( position > 0 )
                                                                endIndex = index - 1;
                                                        else if ( position < 0 )
                                                                startIndex = index + 1;
                                                        else
                                                                return { container : parent, offset : getNodeIndex( child ) };
                                                }

                                                // All childs are text nodes,
                                                // or to the right hand of test range are all text nodes. (#6992)
                                                if ( index == -1 || index == siblings.length - 1 && position < 0 )
                                                {
                                                        // Adapt test range to embrace the entire parent contents.
                                                        testRange.moveToElementText( parent );
                                                        testRange.setEndPoint( 'StartToStart', range );

                                                        // IE report line break as CRLF with range.text but
                                                        // only LF with textnode.nodeValue, normalize them to avoid
                                                        // breaking character counting logic below. (#3949)
                                                        distance = testRange.text.replace( /(\r\n|\r)/g, '\n' ).length;

                                                        siblings = parent.childNodes;

                                                        // Actual range anchor right beside test range at the boundary of text node.
                                                        if ( !distance )
                                                        {
                                                                child = siblings[ siblings.length - 1 ];

                                                                if ( child.nodeType == CKEDITOR.NODE_ELEMENT )
                                                                        return { container : parent, offset : siblings.length };
                                                                else
                                                                        return { container : child, offset : child.nodeValue.length };
                                                        }

                                                        // Start the measuring until distance overflows, meanwhile count the text nodes.
                                                        var i = siblings.length;
                                                        while ( distance > 0 )
                                                                distance -= siblings[ --i ].nodeValue.length;

                                                        return  { container : siblings[ i ], offset : -distance };
                                                }
                                                // Test range was one offset beyond OR behind the anchored text node.
                                                else
                                                {
                                                        // Adapt one side of test range to the actual range
                                                        // for measuring the offset between them.
                                                        testRange.collapse( position > 0 ? true : false );
                                                        testRange.setEndPoint( position > 0 ? 'StartToStart' : 'EndToStart', range );

                                                        // IE report line break as CRLF with range.text but
                                                        // only LF with textnode.nodeValue, normalize them to avoid
                                                        // breaking character counting logic below. (#3949)
                                                        distance = testRange.text.replace( /(\r\n|\r)/g, '\n' ).length;

                                                        // Actual range anchor right beside test range at the inner boundary of text node.
                                                        if ( !distance )
                                                                return { container : parent, offset : getNodeIndex( child ) + ( position > 0 ? 0 : 1 ) };

                                                        // Start the measuring until distance overflows, meanwhile count the text nodes.
                                                        while ( distance > 0 )
                                                        {
                                                                child = child[ position > 0 ? 'previousSibling' : 'nextSibling' ];
                                                                try
                                                                {
                                                                        distance -= child.nodeValue.length;
                                                                }
                                                                // Measurement in IE could be somtimes wrong because of <select> element. (#4611)
                                                                catch( e )
                                                                {
                                                                        return { container : parent, offset : getNodeIndex( child ) };
                                                                }
                                                        }

                                                        return { container : child, offset : position > 0 ? -distance : child.nodeValue.length + distance };
                                                }
                                        };

                                        return function()
                                        {
                                                // IE doesn't have range support (in the W3C way), so we
                                                // need to do some magic to transform selections into
                                                // CKEDITOR.dom.range instances.

                                                var sel = this.getNative(),
                                                        nativeRange = sel && sel.createRange(),
                                                        type = this.getType(),
                                                        range;

                                                if ( !sel )
                                                        return [];

                                                if ( type == CKEDITOR.SELECTION_TEXT )
                                                {
                                                        range = new CKEDITOR.dom.range( this.document );

                                                        var boundaryInfo = getBoundaryInformation( nativeRange, true );
                                                        range.setStart( new CKEDITOR.dom.node( boundaryInfo.container ), boundaryInfo.offset );

                                                        boundaryInfo = getBoundaryInformation( nativeRange );
                                                        range.setEnd( new CKEDITOR.dom.node( boundaryInfo.container ), boundaryInfo.offset );

                                                        // Correct an invalid IE range case on empty list item. (#5850)
                                                        if ( range.endContainer.getPosition( range.startContainer ) & CKEDITOR.POSITION_PRECEDING
                                                                        && range.endOffset <= range.startContainer.getIndex() )
                                                        {
                                                                range.collapse();
                                                        }

                                                        return [ range ];
                                                }
                                                else if ( type == CKEDITOR.SELECTION_ELEMENT )
                                                {
                                                        var retval = [];

                                                        for ( var i = 0 ; i < nativeRange.length ; i++ )
                                                        {
                                                                var element = nativeRange.item( i ),
                                                                        parentElement = element.parentNode,
                                                                        j = 0;

                                                                range = new CKEDITOR.dom.range( this.document );

                                                                for (; j < parentElement.childNodes.length && parentElement.childNodes[j] != element ; j++ )
                                                                { /*jsl:pass*/ }

                                                                range.setStart( new CKEDITOR.dom.node( parentElement ), j );
                                                                range.setEnd( new CKEDITOR.dom.node( parentElement ), j + 1 );
                                                                retval.push( range );
                                                        }

                                                        return retval;
                                                }

                                                return [];
                                        };
                                })()
                        :
                                function()
                                {

                                        // On browsers implementing the W3C range, we simply
                                        // tranform the native ranges in CKEDITOR.dom.range
                                        // instances.

                                        var ranges = [],
                                                range,
                                                doc = this.document,
                                                sel = this.getNative();

                                        if ( !sel )
                                                return ranges;

                                        // On WebKit, it may happen that we'll have no selection
                                        // available. We normalize it here by replicating the
                                        // behavior of other browsers.
                                        if ( !sel.rangeCount )
                                        {
                                                range = new CKEDITOR.dom.range( doc );
                                                range.moveToElementEditStart( doc.getBody() );
                                                ranges.push( range );
                                        }

                                        for ( var i = 0 ; i < sel.rangeCount ; i++ )
                                        {
                                                var nativeRange = sel.getRangeAt( i );

                                                range = new CKEDITOR.dom.range( doc );

                                                range.setStart( new CKEDITOR.dom.node( nativeRange.startContainer ), nativeRange.startOffset );
                                                range.setEnd( new CKEDITOR.dom.node( nativeRange.endContainer ), nativeRange.endOffset );
                                                ranges.push( range );
                                        }
                                        return ranges;
                                };

                        return function( onlyEditables )
                        {
                                var cache = this._.cache;
                                if ( cache.ranges && !onlyEditables )
                                        return cache.ranges;
                                else if ( !cache.ranges )
                                        cache.ranges = new CKEDITOR.dom.rangeList( func.call( this ) );

                                // Split range into multiple by read-only nodes.
                                if ( onlyEditables )
                                {
                                        var ranges = cache.ranges;
                                        for ( var i = 0; i < ranges.length; i++ )
                                        {
                                                var range = ranges[ i ];

                                                // Drop range spans inside one ready-only node.
                                                var parent = range.getCommonAncestor();
                                                if ( parent.isReadOnly() )
                                                        ranges.splice( i, 1 );

                                                if ( range.collapsed )
                                                        continue;

                                                var startContainer = range.startContainer,
                                                        endContainer = range.endContainer,
                                                        startOffset = range.startOffset,
                                                        endOffset = range.endOffset,
                                                        walkerRange = range.clone();

                                                // Range may start inside a non-editable element, restart range
                                                // by the end of it.
                                                var readOnly;
                                                if ( ( readOnly = startContainer.isReadOnly() ) )
                                                        range.setStartAfter( readOnly );

                                                // Enlarge range start/end with text node to avoid walker
                                                // being DOM destructive, it doesn't interfere our checking
                                                // of elements below as well.
                                                if ( startContainer && startContainer.type == CKEDITOR.NODE_TEXT )
                                                {
                                                        if ( startOffset >= startContainer.getLength() )
                                                                walkerRange.setStartAfter( startContainer );
                                                        else
                                                                walkerRange.setStartBefore( startContainer );
                                                }

                                                if ( endContainer && endContainer.type == CKEDITOR.NODE_TEXT )
                                                {
                                                        if ( !endOffset )
                                                                walkerRange.setEndBefore( endContainer );
                                                        else
                                                                walkerRange.setEndAfter( endContainer );
                                                }

                                                // Looking for non-editable element inside the range.
                                                var walker = new CKEDITOR.dom.walker( walkerRange );
                                                walker.evaluator = function( node )
                                                {
                                                        if ( node.type == CKEDITOR.NODE_ELEMENT
                                                                && node.isReadOnly() )
                                                        {
                                                                var newRange = range.clone();
                                                                range.setEndBefore( node );

                                                                // Drop collapsed range around read-only elements,
                                                                // it make sure the range list empty when selecting
                                                                // only non-editable elements.
                                                                if ( range.collapsed )
                                                                        ranges.splice( i--, 1 );

                                                                // Avoid creating invalid range.
                                                                if ( !( node.getPosition( walkerRange.endContainer ) & CKEDITOR.POSITION_CONTAINS ) )
                                                                {
                                                                        newRange.setStartAfter( node );
                                                                        if ( !newRange.collapsed )
                                                                                ranges.splice( i + 1, 0, newRange );
                                                                }

                                                                return true;
                                                        }

                                                        return false;
                                                };

                                                walker.next();
                                        }
                                }

                                return cache.ranges;
                        };
                })(),

                /**
                 * Gets the DOM element in which the selection starts.
                 * @returns {CKEDITOR.dom.element} The element at the beginning of the
                 *              selection.
                 * @example
                 * var element = editor.getSelection().<b>getStartElement()</b>;
                 * alert( element.getName() );
                 */
                getStartElement : function()
                {
                        var cache = this._.cache;
                        if ( cache.startElement !== undefined )
                                return cache.startElement;

                        var node,
                                sel = this.getNative();

                        switch ( this.getType() )
                        {
                                case CKEDITOR.SELECTION_ELEMENT :
                                        return this.getSelectedElement();

                                case CKEDITOR.SELECTION_TEXT :

                                        var range = this.getRanges()[0];

                                        if ( range )
                                        {
                                                if ( !range.collapsed )
                                                {
                                                        range.optimize();

                                                        // Decrease the range content to exclude particial
                                                        // selected node on the start which doesn't have
                                                        // visual impact. ( #3231 )
                                                        while ( 1 )
                                                        {
                                                                var startContainer = range.startContainer,
                                                                        startOffset = range.startOffset;
                                                                // Limit the fix only to non-block elements.(#3950)
                                                                if ( startOffset == ( startContainer.getChildCount ?
                                                                         startContainer.getChildCount() : startContainer.getLength() )
                                                                         && !startContainer.isBlockBoundary() )
                                                                        range.setStartAfter( startContainer );
                                                                else break;
                                                        }

                                                        node = range.startContainer;

                                                        if ( node.type != CKEDITOR.NODE_ELEMENT )
                                                                return node.getParent();

                                                        node = node.getChild( range.startOffset );

                                                        if ( !node || node.type != CKEDITOR.NODE_ELEMENT )
                                                                node = range.startContainer;
                                                        else
                                                        {
                                                                var child = node.getFirst();
                                                                while (  child && child.type == CKEDITOR.NODE_ELEMENT )
                                                                {
                                                                        node = child;
                                                                        child = child.getFirst();
                                                                }
                                                        }
                                                }
                                                else
                                                {
                                                        node = range.startContainer;
                                                        if ( node.type != CKEDITOR.NODE_ELEMENT )
                                                                node = node.getParent();
                                                }

                                                node = node.$;
                                        }
                        }

                        return cache.startElement = ( node ? new CKEDITOR.dom.element( node ) : null );
                },

                /**
                 * Gets the current selected element.
                 * @returns {CKEDITOR.dom.element} The selected element. Null if no
                 *              selection is available or the selection type is not
                 *              {@link CKEDITOR.SELECTION_ELEMENT}.
                 * @example
                 * var element = editor.getSelection().<b>getSelectedElement()</b>;
                 * alert( element.getName() );
                 */
                getSelectedElement : function()
                {
                        var cache = this._.cache;
                        if ( cache.selectedElement !== undefined )
                                return cache.selectedElement;

                        var self = this;

                        var node = CKEDITOR.tools.tryThese(
                                // Is it native IE control type selection?
                                function()
                                {
                                        return self.getNative().createRange().item( 0 );
                                },
                                // Figure it out by checking if there's a single enclosed
                                // node of the range.
                                function()
                                {
                                        var range  = self.getRanges()[ 0 ],
                                                enclosed,
                                                selected;

                                        // Check first any enclosed element, e.g. <ul>[<li><a href="#">item</a></li>]</ul>
                                        for ( var i = 2; i && !( ( enclosed = range.getEnclosedNode() )
                                                && ( enclosed.type == CKEDITOR.NODE_ELEMENT )
                                                && styleObjectElements[ enclosed.getName() ]
                                                && ( selected = enclosed ) ); i-- )
                                        {
                                                // Then check any deep wrapped element, e.g. [<b><i><img /></i></b>]
                                                range.shrink( CKEDITOR.SHRINK_ELEMENT );
                                        }

                                        return  selected.$;
                                });

                        return cache.selectedElement = ( node ? new CKEDITOR.dom.element( node ) : null );
                },

                lock : function()
                {
                        // Call all cacheable function.
                        this.getRanges();
                        this.getStartElement();
                        this.getSelectedElement();

                        // The native selection is not available when locked.
                        this._.cache.nativeSel = {};

                        this.isLocked = 1;

                        // Save this selection inside the DOM document.
                        this.document.setCustomData( 'cke_locked_selection', this );
                },

                unlock : function( restore )
                {
                        var doc = this.document,
                                lockedSelection = doc.getCustomData( 'cke_locked_selection' );

                        if ( lockedSelection )
                        {
                                doc.setCustomData( 'cke_locked_selection', null );

                                if ( restore )
                                {
                                        var selectedElement = lockedSelection.getSelectedElement(),
                                                ranges = !selectedElement && lockedSelection.getRanges();

                                        this.isLocked = 0;
                                        this.reset();

                                        doc.getBody().focus();

                                        if ( selectedElement )
                                                this.selectElement( selectedElement );
                                        else
                                                this.selectRanges( ranges );
                                }
                        }

                        if  ( !lockedSelection || !restore )
                        {
                                this.isLocked = 0;
                                this.reset();
                        }
                },

                reset : function()
                {
                        this._.cache = {};
                },

                /**
                 *  Make the current selection of type {@link CKEDITOR.SELECTION_ELEMENT} by enclosing the specified element.
                 * @param element
                 */
                selectElement : function( element )
                {
                        if ( this.isLocked )
                        {
                                var range = new CKEDITOR.dom.range( this.document );
                                range.setStartBefore( element );
                                range.setEndAfter( element );

                                this._.cache.selectedElement = element;
                                this._.cache.startElement = element;
                                this._.cache.ranges = new CKEDITOR.dom.rangeList( range );
                                this._.cache.type = CKEDITOR.SELECTION_ELEMENT;

                                return;
                        }

                        if ( CKEDITOR.env.ie )
                        {
                                this.getNative().empty();

                                try
                                {
                                        // Try to select the node as a control.
                                        range = this.document.$.body.createControlRange();
                                        range.addElement( element.$ );
                                        range.select();
                                }
                                catch( e )
                                {
                                        // If failed, select it as a text range.
                                        range = this.document.$.body.createTextRange();
                                        range.moveToElementText( element.$ );
                                        range.select();
                                }
                                finally
                                {
                                        this.document.fire( 'selectionchange' );
                                }

                                this.reset();
                        }
                        else
                        {
                                // Create the range for the element.
                                range = this.document.$.createRange();
                                range.selectNode( element.$ );

                                // Select the range.
                                var sel = this.getNative();
                                sel.removeAllRanges();
                                sel.addRange( range );

                                this.reset();
                        }
                },

                /**
                 *  Adding the specified ranges to document selection preceding
                 * by clearing up the original selection.
                 * @param {CKEDITOR.dom.range} ranges
                 */
                selectRanges : function( ranges )
                {
                        if ( this.isLocked )
                        {
                                this._.cache.selectedElement = null;
                                this._.cache.startElement = ranges[ 0 ] && ranges[ 0 ].getTouchedStartNode();
                                this._.cache.ranges = new CKEDITOR.dom.rangeList( ranges );
                                this._.cache.type = CKEDITOR.SELECTION_TEXT;

                                return;
                        }

                        if ( CKEDITOR.env.ie )
                        {
                                if ( ranges.length > 1 )
                                {
                                        // IE doesn't accept multiple ranges selection, so we join all into one.
                                        var last = ranges[ ranges.length -1 ] ;
                                        ranges[ 0 ].setEnd( last.endContainer, last.endOffset );
                                        ranges.length = 1;
                                }

                                if ( ranges[ 0 ] )
                                        ranges[ 0 ].select();

                                this.reset();
                        }
                        else
                        {
                                var sel = this.getNative();

                                if ( ranges.length )
                                        sel.removeAllRanges();

                                for ( var i = 0 ; i < ranges.length ; i++ )
                                {
                                        // Joining sequential ranges introduced by
                                        // readonly elements protection.
                                        if ( i < ranges.length -1 )
                                        {
                                                var left = ranges[ i ], right = ranges[ i +1 ],
                                                                between = left.clone();
                                                between.setStart( left.endContainer, left.endOffset );
                                                between.setEnd( right.startContainer, right.startOffset );

                                                // Don't confused by Firefox adjancent multi-ranges
                                                // introduced by table cells selection.
                                                if ( !between.collapsed )
                                                {
                                                        between.shrink( CKEDITOR.NODE_ELEMENT, true );
                                                        var ancestor = between.getCommonAncestor(),
                                                                enclosed = between.getEnclosedNode();

                                                        // The following cases has to be considered:
                                                        // 1. <span contenteditable="false">[placeholder]</span>
                                                        // 2. <input contenteditable="false"  type="radio"/> (#6621)
                                                        if ( ancestor.isReadOnly() || enclosed && enclosed.isReadOnly() )
                                                        {
                                                                right.setStart( left.startContainer, left.startOffset );
                                                                ranges.splice( i--, 1 );
                                                                continue;
                                                        }
                                                }
                                        }

                                        var range = ranges[ i ];
                                        var nativeRange = this.document.$.createRange();
                                        var startContainer = range.startContainer;

                                        // In FF2, if we have a collapsed range, inside an empty
                                        // element, we must add something to it otherwise the caret
                                        // will not be visible.
                                        // In Opera instead, the selection will be moved out of the
                                        // element. (#4657)
                                        if ( range.collapsed &&
                                                ( CKEDITOR.env.opera || ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 ) ) &&
                                                startContainer.type == CKEDITOR.NODE_ELEMENT &&
                                                !startContainer.getChildCount() )
                                        {
                                                startContainer.appendText( '' );
                                        }

                                        nativeRange.setStart( startContainer.$, range.startOffset );
                                        nativeRange.setEnd( range.endContainer.$, range.endOffset );

                                        // Select the range.
                                        sel.addRange( nativeRange );
                                }

                                this.reset();
                        }
                },

                /**
                 *  Create bookmark for every single of this selection range (from #getRanges)
                 * by calling the {@link CKEDITOR.dom.range.prototype.createBookmark} method,
                 * with extra cares to avoid interferon among those ranges. Same arguments are
                 * received as with the underlay range method.
                 */
                createBookmarks : function( serializable )
                {
                        return this.getRanges().createBookmarks( serializable );
                },

                /**
                 *  Create bookmark for every single of this selection range (from #getRanges)
                 * by calling the {@link CKEDITOR.dom.range.prototype.createBookmark2} method,
                 * with extra cares to avoid interferon among those ranges. Same arguments are
                 * received as with the underlay range method.
                 */
                createBookmarks2 : function( normalized )
                {
                        return this.getRanges().createBookmarks2( normalized );
                },

                /**
                 * Select the virtual ranges denote by the bookmarks by calling #selectRanges.
                 * @param bookmarks
                 */
                selectBookmarks : function( bookmarks )
                {
                        var ranges = [];
                        for ( var i = 0 ; i < bookmarks.length ; i++ )
                        {
                                var range = new CKEDITOR.dom.range( this.document );
                                range.moveToBookmark( bookmarks[i] );
                                ranges.push( range );
                        }
                        this.selectRanges( ranges );
                        return this;
                },

                /**
                 * Retrieve the common ancestor node of the first range and the last range.
                 */
                getCommonAncestor : function()
                {
                        var ranges = this.getRanges(),
                                startNode = ranges[ 0 ].startContainer,
                                endNode = ranges[ ranges.length - 1 ].endContainer;
                        return startNode.getCommonAncestor( endNode );
                },

                /**
                 * Moving scroll bar to the current selection's start position.
                 */
                scrollIntoView : function()
                {
                        // If we have split the block, adds a temporary span at the
                        // range position and scroll relatively to it.
                        var start = this.getStartElement();
                        start.scrollIntoView();
                }
        };
})();

( function()
{
        var notWhitespaces = CKEDITOR.dom.walker.whitespaces( true ),
                        fillerTextRegex = /\ufeff|\u00a0/,
                        nonCells = { table:1,tbody:1,tr:1 };

        CKEDITOR.dom.range.prototype.select =
                CKEDITOR.env.ie ?
                        // V2
                        function( forceExpand )
                        {
                                var collapsed = this.collapsed;
                                var isStartMarkerAlone;
                                var dummySpan;

                                // IE doesn't support selecting the entire table row/cell, move the selection into cells, e.g.
                                // <table><tbody><tr>[<td>cell</b></td>... => <table><tbody><tr><td>[cell</td>...
                                if ( this.startContainer.type == CKEDITOR.NODE_ELEMENT && this.startContainer.getName() in nonCells
                                        || this.endContainer.type == CKEDITOR.NODE_ELEMENT && this.endContainer.getName() in nonCells )
                                {
                                        this.shrink( CKEDITOR.NODE_ELEMENT, true );
                                }

                                var bookmark = this.createBookmark();

                                // Create marker tags for the start and end boundaries.
                                var startNode = bookmark.startNode;

                                var endNode;
                                if ( !collapsed )
                                        endNode = bookmark.endNode;

                                // Create the main range which will be used for the selection.
                                var ieRange = this.document.$.body.createTextRange();

                                // Position the range at the start boundary.
                                ieRange.moveToElementText( startNode.$ );
                                ieRange.moveStart( 'character', 1 );

                                if ( endNode )
                                {
                                        // Create a tool range for the end.
                                        var ieRangeEnd = this.document.$.body.createTextRange();

                                        // Position the tool range at the end.
                                        ieRangeEnd.moveToElementText( endNode.$ );

                                        // Move the end boundary of the main range to match the tool range.
                                        ieRange.setEndPoint( 'EndToEnd', ieRangeEnd );
                                        ieRange.moveEnd( 'character', -1 );
                                }
                                else
                                {
                                        // The isStartMarkerAlone logic comes from V2. It guarantees that the lines
                                        // will expand and that the cursor will be blinking on the right place.
                                        // Actually, we are using this flag just to avoid using this hack in all
                                        // situations, but just on those needed.
                                        var next = startNode.getNext( notWhitespaces );
                                        isStartMarkerAlone = ( !( next && next.getText && next.getText().match( fillerTextRegex ) )     // already a filler there?
                                                                                  && ( forceExpand || !startNode.hasPrevious() || ( startNode.getPrevious().is && startNode.getPrevious().is( 'br' ) ) ) );

                                        // Append a temporary <span>&#65279;</span> before the selection.
                                        // This is needed to avoid IE destroying selections inside empty
                                        // inline elements, like <b></b> (#253).
                                        // It is also needed when placing the selection right after an inline
                                        // element to avoid the selection moving inside of it.
                                        dummySpan = this.document.createElement( 'span' );
                                        dummySpan.setHtml( '&#65279;' );        // Zero Width No-Break Space (U+FEFF). See #1359.
                                        dummySpan.insertBefore( startNode );

                                        if ( isStartMarkerAlone )
                                        {
                                                // To expand empty blocks or line spaces after <br>, we need
                                                // instead to have any char, which will be later deleted using the
                                                // selection.
                                                // \ufeff = Zero Width No-Break Space (U+FEFF). (#1359)
                                                this.document.createText( '\ufeff' ).insertBefore( startNode );
                                        }
                                }

                                // Remove the markers (reset the position, because of the changes in the DOM tree).
                                this.setStartBefore( startNode );
                                startNode.remove();

                                if ( collapsed )
                                {
                                        if ( isStartMarkerAlone )
                                        {
                                                // Move the selection start to include the temporary \ufeff.
                                                ieRange.moveStart( 'character', -1 );

                                                ieRange.select();

                                                // Remove our temporary stuff.
                                                this.document.$.selection.clear();
                                        }
                                        else
                                                ieRange.select();

                                        this.moveToPosition( dummySpan, CKEDITOR.POSITION_BEFORE_START );
                                        dummySpan.remove();
                                }
                                else
                                {
                                        this.setEndBefore( endNode );
                                        endNode.remove();
                                        ieRange.select();
                                }

                                this.document.fire( 'selectionchange' );
                        }
                :
                        function()
                        {
                                var startContainer = this.startContainer;

                                // If we have a collapsed range, inside an empty element, we must add
                                // something to it, otherwise the caret will not be visible.
                                if ( this.collapsed && startContainer.type == CKEDITOR.NODE_ELEMENT && !startContainer.getChildCount() )
                                        startContainer.append( new CKEDITOR.dom.text( '' ) );

                                var nativeRange = this.document.$.createRange();
                                nativeRange.setStart( startContainer.$, this.startOffset );

                                try
                                {
                                        nativeRange.setEnd( this.endContainer.$, this.endOffset );
                                }
                                catch ( e )
                                {
                                        // There is a bug in Firefox implementation (it would be too easy
                                        // otherwise). The new start can't be after the end (W3C says it can).
                                        // So, let's create a new range and collapse it to the desired point.
                                        if ( e.toString().indexOf( 'NS_ERROR_ILLEGAL_VALUE' ) >= 0 )
                                        {
                                                this.collapse( true );
                                                nativeRange.setEnd( this.endContainer.$, this.endOffset );
                                        }
                                        else
                                                throw( e );
                                }

                                var selection = this.document.getSelection().getNative();
                                // getSelection() returns null in case when iframe is "display:none" in FF. (#6577)
                                if ( selection )
                                {
                                        selection.removeAllRanges();
                                        selection.addRange( nativeRange );
                                }
                        };
} )();