| /* |
| * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package sun.awt.windows; |
| |
| import java.awt.*; |
| import java.awt.peer.*; |
| import java.awt.event.ActionEvent; |
| import java.awt.event.ItemEvent; |
| |
| final class WListPeer extends WComponentPeer implements ListPeer { |
| |
| @Override |
| public boolean isFocusable() { |
| return true; |
| } |
| |
| // ListPeer implementation |
| |
| @Override |
| public int[] getSelectedIndexes() { |
| List l = (List)target; |
| int len = l.getItemCount(); |
| int sel[] = new int[len]; |
| int nsel = 0; |
| for (int i = 0 ; i < len ; i++) { |
| if (isSelected(i)) { |
| sel[nsel++] = i; |
| } |
| } |
| int selected[] = new int[nsel]; |
| System.arraycopy(sel, 0, selected, 0, nsel); |
| return selected; |
| } |
| |
| @Override |
| public void add(String item, int index) { |
| addItem(item, index); |
| } |
| |
| @Override |
| public void removeAll() { |
| clear(); |
| } |
| |
| @Override |
| public void setMultipleMode (boolean b) { |
| setMultipleSelections(b); |
| } |
| |
| @Override |
| public Dimension getPreferredSize(int rows) { |
| if ( fm == null ) { |
| List li = (List)target; |
| fm = getFontMetrics( li.getFont() ); |
| } |
| Dimension d = getMinimumSize(rows); |
| d.width = Math.max(d.width, getMaxWidth() + 20); |
| return d; |
| } |
| |
| @Override |
| public Dimension getMinimumSize(int rows) { |
| return new Dimension(20 + fm.stringWidth("0123456789abcde"), |
| (fm.getHeight() * rows) + 4); // include borders |
| } |
| |
| private FontMetrics fm; |
| public void addItem(String item, int index) { |
| addItems(new String[] {item}, index, fm.stringWidth(item)); |
| } |
| native void addItems(String[] items, int index, int width); |
| |
| @Override |
| public native void delItems(int start, int end); |
| public void clear() { |
| List l = (List)target; |
| delItems(0, l.getItemCount()); |
| } |
| @Override |
| public native void select(int index); |
| @Override |
| public native void deselect(int index); |
| @Override |
| public native void makeVisible(int index); |
| public native void setMultipleSelections(boolean v); |
| public native int getMaxWidth(); |
| // Toolkit & peer internals |
| |
| WListPeer(List target) { |
| super(target); |
| } |
| |
| @Override |
| native void create(WComponentPeer parent); |
| |
| @Override |
| void initialize() { |
| List li = (List)target; |
| |
| fm = getFontMetrics( li.getFont() ); |
| |
| // Fixed 6336384: setFont should be done before addItems |
| Font f = li.getFont(); |
| if (f != null) { |
| setFont(f); |
| } |
| |
| // add any items that were already inserted in the target. |
| int nitems = li.getItemCount(); |
| if (nitems > 0) { |
| String[] items = new String[nitems]; |
| int maxWidth = 0; |
| int width = 0; |
| for (int i = 0; i < nitems; i++) { |
| items[i] = li.getItem(i); |
| width = fm.stringWidth(items[i]); |
| if (width > maxWidth) { |
| maxWidth = width; |
| } |
| } |
| addItems(items, 0, maxWidth); |
| } |
| |
| // set whether this list should allow multiple selections. |
| setMultipleSelections(li.isMultipleMode()); |
| |
| // select the item if necessary. |
| int sel[] = li.getSelectedIndexes(); |
| for (int i = 0 ; i < sel.length ; i++) { |
| select(sel[i]); |
| } |
| |
| // make the visible position visible. |
| // fix for 4676536 by kdm@sparc.spb.su |
| // we should call makeVisible() after we call select() |
| // because of a bug in Windows which is manifested by |
| // incorrect scrolling of the selected item if the list |
| // height is less than an item height of the list. |
| int index = li.getVisibleIndex(); |
| if (index < 0 && sel.length > 0) { |
| index = sel[0]; |
| } |
| if (index >= 0) { |
| makeVisible(index); |
| } |
| |
| super.initialize(); |
| } |
| |
| @Override |
| public boolean shouldClearRectBeforePaint() { |
| return false; |
| } |
| |
| private native void updateMaxItemWidth(); |
| |
| /*public*/ native boolean isSelected(int index); |
| |
| // update the fontmetrics when the font changes |
| @Override |
| synchronized void _setFont(Font f) |
| { |
| super._setFont( f ); |
| fm = getFontMetrics( ((List)target).getFont() ); |
| updateMaxItemWidth(); |
| } |
| |
| // native callbacks |
| |
| void handleAction(final int index, final long when, final int modifiers) { |
| final List l = (List)target; |
| WToolkit.executeOnEventHandlerThread(l, new Runnable() { |
| @Override |
| public void run() { |
| l.select(index); |
| postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED, |
| l.getItem(index), when, modifiers)); |
| } |
| }); |
| } |
| |
| void handleListChanged(final int index) { |
| final List l = (List)target; |
| WToolkit.executeOnEventHandlerThread(l, new Runnable() { |
| @Override |
| public void run() { |
| postEvent(new ItemEvent(l, ItemEvent.ITEM_STATE_CHANGED, |
| Integer.valueOf(index), |
| isSelected(index)? ItemEvent.SELECTED : |
| ItemEvent.DESELECTED)); |
| |
| } |
| }); |
| } |
| } |