/*******************************************************************************
* Copyright (c) 2000, 2010, 2012 IBM Corporation, Gerhardt Informatics Kft. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Gerhardt Informatics Kft. - GEFGWT port
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Point;
/**
* Instances of this class support the layout of selectable tool bar items.
* <p>
* The item children that may be added to instances of this class must be of
* type <code>ToolItem</code>.
* </p>
* <p>
* Note that although this class is a subclass of <code>Composite</code>, it
* does not make sense to add <code>Control</code> children to it, or set a
* layout on it.
* </p>
* <p>
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>FLAT, WRAP, RIGHT, HORIZONTAL, VERTICAL, SHADOW_OUT</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* <p>
* Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
* </p>
* <p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/snippets/#toolbar">ToolBar, ToolItem
* snippets</a>
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example:
* ControlExample</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further
* information</a>
* @noextend This class is not intended to be subclassed by clients.
*/
public class ToolBar extends Composite {
ToolItem lastFocus;
ToolItem[] tabItemList;
ImageList imageList;
/**
* Constructs a new instance of this class given its parent and a style
* value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in class
* <code>SWT</code> which is applicable to instances of this class, or must
* be built by <em>bitwise OR</em>'ing together (that is, using the
* <code>int</code> "|" operator) two or more of those <code>SWT</code>
* style constants. The class description lists the style constants that are
* applicable to the class. Style bits are also inherited from superclasses.
* </p>
*
* @param parent
* a composite control which will be the parent of the new
* instance (cannot be null)
* @param style
* the style of control to construct
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an
* allowed subclass</li>
* </ul>
*
* @see SWT#FLAT
* @see SWT#WRAP
* @see SWT#RIGHT
* @see SWT#HORIZONTAL
* @see SWT#SHADOW_OUT
* @see SWT#VERTICAL
* @see Widget#checkSubclass()
* @see Widget#getStyle()
*/
public ToolBar(Composite parent, int style) {
}
protected void checkSubclass() {
if (!isValidSubclass())
error(SWT.ERROR_INVALID_SUBCLASS);
}
void createHandle(int index) {
}
public Point computeSize(int wHint, int hHint, boolean changed) {
return null;
}
Widget computeTabGroup() {
ToolItem[] items = _getItems();
if (tabItemList == null) {
int i = 0;
while (i < items.length && items[i].control == null)
i++;
if (i == items.length)
return super.computeTabGroup();
}
int index = 0;
while (index < items.length) {
if (items[index].hasFocus())
break;
index++;
}
while (index >= 0) {
ToolItem item = items[index];
if (item.isTabGroup())
return item;
index--;
}
return super.computeTabGroup();
}
Widget[] computeTabList() {
ToolItem[] items = _getItems();
if (tabItemList == null) {
int i = 0;
while (i < items.length && items[i].control == null)
i++;
if (i == items.length)
return super.computeTabList();
}
Widget result[] = {};
if (!isTabGroup() || !isEnabled() || !isVisible())
return result;
ToolItem[] list = tabList != null ? _getTabItemList() : items;
for (int i = 0; i < list.length; i++) {
ToolItem child = list[i];
Widget[] childList = child.computeTabList();
if (childList.length != 0) {
Widget[] newResult = new Widget[result.length
+ childList.length];
System.arraycopy(result, 0, newResult, 0, result.length);
System.arraycopy(childList, 0, newResult, result.length,
childList.length);
result = newResult;
}
}
if (result.length == 0)
result = new Widget[] { this };
return result;
}
/**
* Returns the item at the given, zero-relative index in the receiver.
* Throws an exception if the index is out of range.
*
* @param index
* the index of the item to return
* @return the item at the given index
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0
* and the number of elements in the list minus 1 (inclusive)
* </li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public ToolItem getItem(int index) {
checkWidget();
if (!(0 <= index && index < getItemCount()))
error(SWT.ERROR_INVALID_RANGE);
return getItems()[index];
}
/**
* Returns the item at the given point in the receiver or null if no such
* item exists. The point is in the coordinate system of the receiver.
*
* @param point
* the point used to locate the item
* @return the item at the given point
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public ToolItem getItem(Point point) {
checkWidget();
if (point == null)
error(SWT.ERROR_NULL_ARGUMENT);
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
if (items[i].getBounds().contains(point))
return items[i];
}
return null;
}
/**
* Returns the number of items contained in the receiver.
*
* @return the number of items
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getItemCount() {
return 0;
}
/**
* Returns an array of <code>ToolItem</code>s which are the items in the
* receiver.
* <p>
* Note: This is not the actual structure used by the receiver to maintain
* its list of items, so modifying the array will not affect the receiver.
* </p>
*
* @return the items in the receiver
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public ToolItem[] getItems() {
checkWidget();
return _getItems();
}
ToolItem[] _getItems() {
return null;
}
/**
* Returns the number of rows in the receiver. When the receiver has the
* <code>WRAP</code> style, the number of rows can be greater than one.
* Otherwise, the number of rows is always one.
*
* @return the number of items
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getRowCount() {
checkWidget();
/* On GTK, toolbars cannot wrap */
return 1;
}
ToolItem[] _getTabItemList() {
if (tabItemList == null)
return tabItemList;
int count = 0;
for (int i = 0; i < tabItemList.length; i++) {
if (!tabItemList[i].isDisposed())
count++;
}
if (count == tabItemList.length)
return tabItemList;
ToolItem[] newList = new ToolItem[count];
int index = 0;
for (int i = 0; i < tabItemList.length; i++) {
if (!tabItemList[i].isDisposed()) {
newList[index++] = tabItemList[i];
}
}
tabItemList = newList;
return tabItemList;
}
boolean hasFocus() {
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
ToolItem item = items[i];
if (item.hasFocus())
return true;
}
return super.hasFocus();
}
/**
* Searches the receiver's list starting at the first item (index 0) until
* an item is found that is equal to the argument, and returns the index of
* that item. If no item is found, returns -1.
*
* @param item
* the search item
* @return the index of the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the tool item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the tool item has been
* disposed</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int indexOf(ToolItem item) {
checkWidget();
if (item == null)
error(SWT.ERROR_NULL_ARGUMENT);
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
if (item == items[i])
return i;
}
return -1;
}
boolean mnemonicHit(char key) {
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
long /* int */labelHandle = items[i].labelHandle;
if (labelHandle != 0 && mnemonicHit(labelHandle, key))
return true;
}
return false;
}
boolean mnemonicMatch(char key) {
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
long /* int */labelHandle = items[i].labelHandle;
if (labelHandle != 0 && mnemonicMatch(labelHandle, key))
return true;
}
return false;
}
void relayout() {
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
ToolItem item = items[i];
if (item != null)
item.resizeControl();
}
}
void releaseChildren(boolean destroy) {
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
ToolItem item = items[i];
if (item != null && !item.isDisposed()) {
item.release(false);
}
}
super.releaseChildren(destroy);
}
void releaseWidget() {
super.releaseWidget();
if (imageList != null)
imageList.dispose();
imageList = null;
}
void removeControl(Control control) {
super.removeControl(control);
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
ToolItem item = items[i];
if (item.control == control)
item.setControl(null);
}
}
void reskinChildren(int flags) {
ToolItem[] items = _getItems();
if (items != null) {
for (int i = 0; i < items.length; i++) {
ToolItem item = items[i];
if (item != null)
item.reskin(flags);
}
}
super.reskinChildren(flags);
}
int setBounds(int x, int y, int width, int height, boolean move,
boolean resize) {
int result = super.setBounds(x, y, width, height, move, resize);
if ((result & RESIZED) != 0)
relayout();
return result;
}
void setFontDescription(long /* int */font) {
super.setFontDescription(font);
ToolItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
items[i].setFontDescription(font);
}
relayout();
}
void setOrientation(boolean create) {
super.setOrientation(create);
ToolItem[] items = _getItems();
for (int i = 0; i < items.length; i++) {
items[i].setOrientation(create);
}
}
public void setToolTipText(String string) {
}
}