2 (c) 2009 by Leon Winter
3 (c) 2009, 2010 by Hannes Schueller
4 (c) 2010 by Hans-Peter Deifel
5 (c) 2011 by Daniel Carl
11 hintCss: "z-index:100000;font-family:monospace;font-size:10px;"
12 + "font-weight:bold;color:white;background-color:red;"
13 + "padding:0px 1px;position:absolute;",
14 hintClass: "hinting_mode_hint",
15 hintClassFocus: "hinting_mode_hint_focus",
16 elemBackground: "#ff0",
17 elemBackgroundFocus: "#8f0",
22 var currentFocusNum = 1;
26 this.createHints = function(inputText, hintMode)
33 var top_height = topwin.innerHeight;
34 var top_width = topwin.innerWidth;
40 function helper (win, offsetX, offsetY) {
41 var doc = win.document;
43 var win_height = win.height;
44 var win_width = win.width;
47 var minX = offsetX < 0 ? -offsetX : 0;
48 var minY = offsetY < 0 ? -offsetY : 0;
49 var maxX = offsetX + win_width > top_width ? top_width - offsetX : top_width;
50 var maxY = offsetY + win_height > top_height ? top_height - offsetY : top_height;
52 var scrollX = win.scrollX;
53 var scrollY = win.scrollY;
55 hintContainer = doc.createElement("div");
56 hintContainer.id = "hint_container";
58 if (typeof(inputText) == "undefined" || inputText == "") {
59 xpath_expr = "//*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @role='link' or @href] | //input[not(@type='hidden')] | //a[href] | //area | //textarea | //button | //select";
61 xpath_expr = "//*[(@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @role='link' or @href) and contains(., '" + inputText + "')] | //input[not(@type='hidden') and contains(., '" + inputText + "')] | //a[@href and contains(., '" + inputText + "')] | //area[contains(., '" + inputText + "')] | //textarea[contains(., '" + inputText + "')] | //button[contains(@value, '" + inputText + "')] | //select[contains(., '" + inputText + "')]";
64 var res = doc.evaluate(xpath_expr, doc,
66 return "http://www.w3.org/1999/xhtml";
67 }, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
69 /* generate basic hint element which will be cloned and updated later */
70 var hintSpan = doc.createElement("span");
71 hintSpan.setAttribute("class", config.hintClass);
72 hintSpan.style.cssText = config.hintCss;
74 /* due to the different XPath result type, we will need two counter variables */
75 var rect, elem, text, node, show_text;
76 for (var i = 0; i < res.snapshotLength; i++)
78 if (hintCount >= config.maxAllowedHints)
81 elem = res.snapshotItem(i);
82 rect = elem.getBoundingClientRect();
83 if (!rect || rect.left > maxX || rect.right < minX || rect.top > maxY || rect.bottom < minY)
86 var style = topwin.getComputedStyle(elem, "");
87 if (style.display == "none" || style.visibility != "visible")
90 var leftpos = Math.max((rect.left + scrollX), scrollX);
91 var toppos = Math.max((rect.top + scrollY), scrollY);
93 /* making this block DOM compliant */
94 var hint = hintSpan.cloneNode(false);
95 hint.setAttribute("id", "vimprobablehint" + hintCount);
96 hint.style.left = leftpos + "px";
97 hint.style.top = toppos + "px";
98 text = doc.createTextNode(hintCount + 1);
99 hint.appendChild(text);
101 hintContainer.appendChild(hint);
107 background: elem.style.background,
108 foreground: elem.style.color}
111 /* make the link black to ensure it's readable */
112 elem.style.color = config.elemColor;
113 elem.style.background = config.elemBackground;
116 doc.documentElement.appendChild(hintContainer);
118 /* recurse into any iframe or frame element */
119 var frameTags = ["frame","iframe"];
120 for (var f = 0; f < frameTags.length; ++f) {
121 var frames = doc.getElementsByTagName(frameTags[f]);
122 for (var i = 0, nframes = frames.length; i < nframes; ++i) {
124 rect = elem.getBoundingClientRect();
125 if (!elem.contentWindow || !rect || rect.left > maxX || rect.right < minX || rect.top > maxY || rect.bottom < minY)
127 helper(elem.contentWindow, offsetX + rect.left, offsetY + rect.top);
132 helper(topwin, 0, 0);
136 if (hintCount == 1) {
137 /* just one hinted element - might as well follow it */
142 /* set focus on hint with given number */
143 this.focusHint = function(n)
145 /* reset previous focused hint */
146 var hint = _getHintByNumber(currentFocusNum);
148 hint.elem.className = hint.elem.className.replace(config.hintClassFocus, config.hintClass);
149 hint.elem.style.background = config.elemBackground;
154 /* mark new hint as focused */
155 var hint = _getHintByNumber(currentFocusNum);
157 hint.elem.className = hint.elem.className.replace(config.hintClass, config.hintClassFocus);
158 hint.elem.style.background = config.elemBackgroundFocus;
162 /* set focus to next avaiable hint */
163 this.focusNextHint = function()
165 var index = _getHintIdByNumber(currentFocusNum);
167 if (typeof(hints[index + 1]) != "undefined") {
168 this.focusHint(hints[index + 1].number);
170 this.focusHint(hints[0].number);
174 /* set focus to previous avaiable hint */
175 this.focusPreviousHint = function()
177 var index = _getHintIdByNumber(currentFocusNum);
178 if (index != 0 && typeof(hints[index - 1].number) != "undefined") {
179 this.focusHint(hints[index - 1].number);
181 this.focusHint(hints[hints.length - 1].number);
185 /* filters hints matching given number */
186 this.updateHints = function(n)
189 return this.createHints();
191 /* remove none matching hints */
193 for (var i = 0; i < hints.length; ++i) {
195 if (0 != hint.number.toString().indexOf(n.toString())) {
196 remove.push(hint.number);
200 for (var i = 0; i < remove.length; ++i) {
201 _removeHint(remove[i]);
204 if (hints.length === 1) {
205 return this.fire(hints[0].number);
207 return this.focusHint(n);
211 this.clearFocus = function()
213 if (document.activeElement && document.activeElement.blur) {
214 document.activeElement.blur();
218 /* remove all hints and set previous style to them */
219 this.clearHints = function()
221 if (hints.length == 0) {
224 for (var i = 0; i < hints.length; ++i) {
226 if (typeof(hint.elem) != "undefined") {
227 hint.elem.style.background = hint.background;
228 hint.elem.style.color = hint.foreground;
229 hint.span.parentNode.removeChild(hint.span);
233 hintContainer.parentNode.removeChild(hintContainer);
234 window.onkeyup = null;
237 /* fires the modeevent on hint with given number */
238 this.fire = function(n)
242 var n = currentFocusNum;
244 var hint = _getHintByNumber(n);
245 if (typeof(hint.elem) == "undefined")
249 var tag = el.nodeName.toLowerCase();
253 if (tag == "iframe" || tag == "frame" || tag == "textarea" || tag == "input" && (el.type == "text" || el.type == "password" || el.type == "checkbox" || el.type == "radio") || tag == "select") {
255 if (tag == "input" || tag == "textarea") {
263 case "f": result = _open(el); break;
264 case "F": result = _openNewWindow(el); break;
265 default: result = _getElemtSource(el);
271 this.focusInput = function()
273 if (document.getElementsByTagName("body")[0] === null || typeof(document.getElementsByTagName("body")[0]) != "object")
276 /* prefixing html: will result in namespace error */
277 var hinttags = "//input[@type='text'] | //input[@type='password'] | //textarea";
278 var r = document.evaluate(hinttags, document,
280 return "http://www.w3.org/1999/xhtml";
281 }, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
286 for (i = 0; i < r.snapshotLength; i++) {
287 var elem = r.snapshotItem(i);
289 if (elem.style.display != "none" && elem.style.visibility != "hidden") {
295 if (j == 1 && elem.style.display != "none" && elem.style.visibility != "hidden") {
297 var tag = elem.nodeName.toLowerCase();
298 if (tag == "textarea" || tag == "input") {
303 if (elem == document.activeElement) {
308 /* no appropriate field found focused - focus the first one */
309 if (j == 0 && first !== null) {
311 var tag = elem.nodeName.toLowerCase();
312 if (tag == "textarea" || tag == "input") {
318 /* retrieves text content fro given element */
319 function _getTextFromElement(el)
321 if (el instanceof HTMLInputElement || el instanceof HTMLTextAreaElement) {
323 } else if (el instanceof HTMLSelectElement) {
324 if (el.selectedIndex >= 0) {
325 text = el.item(el.selectedIndex).text;
330 text = el.textContent;
332 return text.toLowerCase();;
335 /* retrieves the hint for given hint number */
336 function _getHintByNumber(n)
338 var index = _getHintIdByNumber(n);
339 if (index !== null) {
345 /* retrieves the id of hint with given number */
346 function _getHintIdByNumber(n)
348 for (var i = 0; i < hints.length; ++i) {
350 if (hint.number === n) {
357 /* removes hint with given number from hints array */
358 function _removeHint(n)
360 var index = _getHintIdByNumber(n);
361 if (index === null) {
364 var hint = hints[index];
365 if (hint.number === n) {
366 hint.elem.style.background = hint.background;
367 hint.elem.style.color = hint.foreground;
368 hint.span.parentNode.removeChild(hint.span);
370 /* remove hints from all hints */
371 hints.splice(index, 1);
375 /* opens given element */
378 if (elem.target == "_blank") {
379 elem.removeAttribute("target");
385 /* opens given element into new window */
386 function _openNewWindow(elem)
388 var oldTarget = elem.target;
390 /* set target to open in new window */
391 elem.target = "_blank";
393 elem.target = oldTarget;
398 /* fire moudedown and click event on given element */
399 function _clickElement(elem)
401 doc = elem.ownerDocument;
402 view = elem.contentWindow;
404 var evObj = doc.createEvent("MouseEvents");
405 evObj.initMouseEvent("mousedown", true, true, view, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, null);
406 elem.dispatchEvent(evObj);
408 var evObj = doc.createEvent("MouseEvents");
409 evObj.initMouseEvent("click", true, true, view, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, null);
410 elem.dispatchEvent(evObj);
413 /* retrieves the url of given element */
414 function _getElemtSource(elem)
416 var url = elem.href || elem.src;