old-autovect-branch/libjava/classpath/native/jni/qt-peer/qtlistpeer.cpp

   1 /* qtlistpeer.cpp --
   2    Copyright (C)  2005  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 #include <assert.h>
  39 #include <QWidget>
  40 #include <QListWidget>
  41 #include <gnu_java_awt_peer_qt_QtListPeer.h>
  42 #include "qtcomponent.h"
  43 #include "qtstrings.h"
  44 #include "mainthreadinterface.h"
  45 #include "slotcallbacks.h"
  46
  47 class ListInsert : public AWTEvent {
  48
  49  private:
  50   QListWidget *widget;
  51   QString *string;
  52   int index;
  53
  54  public:
  55   ListInsert(QListWidget *w, QString *s, int i) : AWTEvent()
  56   {
  57     widget = w;
  58     string = s;
  59     index = i;
  60   }
  61
  62   void runEvent()
  63   {
  64     widget->insertItem( index, *string );
  65     delete string;
  66   }
  67 };
  68
  69 class SelectEvent : public AWTEvent {
  70
  71  private:
  72   QListWidget *widget;
  73   int index;
  74   bool selected;
  75
  76  public:
  77   SelectEvent(QListWidget *w, int i, bool s) : AWTEvent()
  78   {
  79     widget = w;
  80     index = i;
  81     selected = s;
  82   }
  83
  84   void runEvent()
  85   {
  86     widget->setItemSelected ( widget->item(index), selected );
  87   }
  88 };
  89
  90 class ListDelete : public AWTEvent {
  91
  92  private:
  93   QListWidget *widget;
  94   int startIndex, endIndex;
  95
  96  public:
  97   ListDelete(QListWidget *w, int starti, int endi) : AWTEvent()
  98   {
  99     widget = w;
 100     startIndex = starti;
 101     endIndex = endi;
 102   }
 103
 104   void runEvent()
 105   {
 106     for (int i = endIndex; i >= startIndex; i--)
 107       delete widget->takeItem(i);
 108   }
 109 };
 110
 111 /*
 112  * Construct a QListWidget object
 113  */
 114 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_init
 115 (JNIEnv *env, jobject obj)
 116 {
 117   QWidget *parentWidget = (QWidget *)getParentWidget(env, obj);
 118   assert( parentWidget );
 119   QListWidget *list = new QListWidget( parentWidget );
 120   assert( list );
 121
 122   setNativeObject( env, obj, list );
 123   connectList(list, env, obj);
 124 }
 125
 126 /*
 127  * Adds an element.
 128  */
 129 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_add
 130 (JNIEnv *env, jobject obj, jstring str, jint index)
 131 {
 132   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 133   assert( list );
 134   QString *qStr = getQString(env, str);
 135   mainThread->postEventToMain( new ListInsert(list, qStr, index) );
 136 }
 137
 138 /*
 139  * Delete items
 140  */
 141 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_delItems
 142 (JNIEnv *env, jobject obj, jint startindex, jint endindex)
 143 {
 144   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 145   assert( list );
 146   mainThread->postEventToMain( new ListDelete(list, startindex, endindex) );
 147 }
 148
 149 /*
 150  * (De)select an element.
 151  */
 152 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_select
 153 (JNIEnv *env, jobject obj, jint index, jboolean sel)
 154 {
 155   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 156   assert( list );
 157
 158   mainThread->postEventToMain( new SelectEvent(list, index,
 159                                                (sel == JNI_TRUE)) );
 160 }
 161
 162 /**
 163  * Returns the indices of the selected items.
 164  */
 165 JNIEXPORT jintArray JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_getSelectedIndexes
 166   (JNIEnv *env, jobject obj)
 167 {
 168   jintArray retArray;
 169   jint *arr;
 170
 171   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 172   assert( list );
 173
 174   QList<QListWidgetItem *> items = list->selectedItems();
 175   retArray = env->NewIntArray( items.count() );
 176   arr = env->GetIntArrayElements( retArray, NULL );
 177
 178   for(int i = 0; i < items.count(); i++)
 179     arr[i] = list->row(items.at(i));
 180
 181   env->ReleaseIntArrayElements( retArray, arr, 0 );
 182   return retArray;
 183 }
 184
 185 /*
 186  * Sets the current item and makes it visible.
 187  */
 188 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_makeVisible
 189   (JNIEnv *env, jobject obj, jint index)
 190 {
 191
 192   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 193   assert( list );
 194
 195   list->scrollToItem( list->item(index) );
 196 }
 197
 198 /*
 199  * Set multiple selection mode.
 200  */
 201 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtListPeer_setMultipleMode
 202 (JNIEnv *env, jobject obj, jboolean allow)
 203 {
 204   QListWidget *list = (QListWidget *) getNativeObject( env, obj );
 205   assert( list );
 206
 207   // FIXME: Multiple selection is buggy in Qt4. Workaround needed.
 208   list->setSelectionMode( ((allow == JNI_TRUE) ? QAbstractItemView::MultiSelection : QAbstractItemView::SingleSelection) );
 209 }
 210