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1: /* GtkChoicePeer.java -- Implements ChoicePeer with GTK 2: Copyright (C) 1998, 1999, 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: 39: package gnu.java.awt.peer.gtk; 40: 41: import java.awt.Choice; 42: import java.awt.event.ItemEvent; 43: import java.awt.peer.ChoicePeer; 44: 45: public class GtkChoicePeer extends GtkComponentPeer 46: implements ChoicePeer 47: { 48: public GtkChoicePeer (Choice c) 49: { 50: super (c); 51: 52: int count = c.getItemCount (); 53: if (count > 0) 54: { 55: String items[] = new String[count]; 56: for (int i = 0; i < count; i++) 57: items[i] = c.getItem (i); 58: 59: append (items); 60: } 61: 62: int selected = c.getSelectedIndex(); 63: if (selected >= 0) 64: select(selected); 65: } 66: 67: native void create (); 68: 69: native void append (String items[]); 70: native int nativeGetSelected (); 71: native void nativeAdd (String item, int index); 72: native void nativeRemove (int index); 73: native void nativeRemoveAll (); 74: 75: native void connectSignals (); 76: 77: native void selectNative (int position); 78: native void selectNativeUnlocked (int position); 79: 80: public void select (int position) 81: { 82: if (Thread.currentThread() == GtkToolkit.mainThread) 83: selectNativeUnlocked (position); 84: else 85: selectNative (position); 86: } 87: 88: public void add (String item, int index) 89: { 90: int before = nativeGetSelected(); 91: 92: nativeAdd (item, index); 93: 94: /* Generate an ItemEvent if we added the first one or 95: if we inserted at or before the currently selected item. */ 96: if ((before < 0) || (before >= index)) 97: { 98: // Must set our state before notifying listeners 99: ((Choice) awtComponent).select (((Choice) awtComponent).getItem (0)); 100: postItemEvent (((Choice) awtComponent).getItem (0), ItemEvent.SELECTED); 101: } 102: } 103: 104: public void remove (int index) 105: { 106: int before = nativeGetSelected(); 107: int after; 108: 109: nativeRemove (index); 110: after = nativeGetSelected(); 111: 112: /* Generate an ItemEvent if we are removing the currently selected item 113: and there are at least one item left. */ 114: if ((before == index) && (after >= 0)) 115: { 116: // Must set our state before notifying listeners 117: ((Choice) awtComponent).select (((Choice) awtComponent).getItem (0)); 118: postItemEvent (((Choice) awtComponent).getItem (0), ItemEvent.SELECTED); 119: } 120: } 121: 122: public void removeAll () 123: { 124: nativeRemoveAll(); 125: } 126: 127: public void addItem (String item, int position) 128: { 129: add (item, position); 130: } 131: 132: protected void postChoiceItemEvent (String label, int stateChange) 133: { 134: postItemEvent (label, stateChange); 135: } 136: }