/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation 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
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.internal.wpf.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
/**
* Instances of this class represent a selectable user interface object
* that represents a hierarchy of tree items in a tree widget.
*
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* <p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/snippets/#tree">Tree, TreeItem, TreeColumn snippets</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 TreeItem extends Item {
Tree parent;
int contentHandle;
int itemCount;
Image [] images;
String [] strings;
Color [] cellBackground, cellForeground;
Font [] cellFont;
boolean checked, grayed, cached, ignoreNotify;
Color background, foreground;
Font font;
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</code> or a <code>TreeItem</code>)
* and a style value describing its behavior and appearance.
* The item is added to the end of the items maintained by its parent.
* <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 tree 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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeItem (Tree parent, int style) {
this (checkNull (parent), null, style, parent.itemCount, 0);
}
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</code> or a <code>TreeItem</code>),
* a style value describing its behavior and appearance, and the index
* at which to place it in the items maintained by its parent.
* <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 tree control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
* @param index the zero-relative index to store the receiver in its parent
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeItem (Tree parent, int style, int index) {
this (checkNull (parent), null, style, index, 0);
}
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</code> or a <code>TreeItem</code>)
* and a style value describing its behavior and appearance.
* The item is added to the end of the items maintained by its parent.
* <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 parentItem a tree 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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeItem (TreeItem parentItem, int style) {
this (checkNull (parentItem).parent, parentItem, style, parentItem.itemCount, 0);
}
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</code> or a <code>TreeItem</code>),
* a style value describing its behavior and appearance, and the index
* at which to place it in the items maintained by its parent.
* <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 parentItem a tree control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
* @param index the zero-relative index to store the receiver in its parent
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeItem (TreeItem parentItem, int style, int index) {
this (checkNull (parentItem).parent, parentItem, style, index, 0);
}
TreeItem (Tree parent, TreeItem parentItem, int style, int index, int handle) {
super (parent, style);
this.parent = parent;
this.handle = handle;
if (handle == 0) {
parent.createItem (this, parentItem, index);
} else {
createWidget ();
}
}
static Tree checkNull (Tree tree) {
if (tree == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
return tree;
}
static TreeItem checkNull (TreeItem item) {
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
return item;
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
void clear () {
strings = null;
images = null;
checked = grayed = false;
updateCheck ();
setForeground (null);
setBackground (null);
setFont (null);
int columns = parent.columnCount == 0 ? 1 : parent.columnCount;
for (int i = 0; i < columns; i++) {
updateText (i);
updateImage (i);
updateBackground (i);
updateForeground (i);
updateFont (i);
}
if ((parent.style & SWT.VIRTUAL) != 0) cached = false;
int part = findPart (0, Tree.RENDER_PANEL_NAME);
if (part != 0) OS.UIElement_InvalidateVisual (part);
OS.GCHandle_Free (part);
}
/**
* Clears the item at the given zero-relative index in the receiver.
* The text, icon and other attributes of the item are set to the default
* value. If the tree was created with the <code>SWT.VIRTUAL</code> style,
* these attributes are requested again as needed.
*
* @param index the index of the item to clear
* @param all <code>true</code> if all child items of the indexed item should be
* cleared recursively, and <code>false</code> otherwise
*
* @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>
*
* @see SWT#VIRTUAL
* @see SWT#SetData
*
* @since 3.2
*/
public void clear (int index, boolean all) {
checkWidget ();
if (index < 0 || index >= itemCount) SWT.error (SWT.ERROR_INVALID_RANGE);
parent.clear (handle, index, all);
}
/**
* Clears all the items in the receiver. The text, icon and other
* attributes of the items are set to their default values. If the
* tree was created with the <code>SWT.VIRTUAL</code> style, these
* attributes are requested again as needed.
*
* @param all <code>true</code> if all child items should be cleared
* recursively, and <code>false</code> otherwise
*
* @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>
*
* @see SWT#VIRTUAL
* @see SWT#SetData
*
* @since 3.2
*/
public void clearAll (boolean all) {
checkWidget ();
parent.clearAll (this, all);
}
void columnAdded (int index) {
if (parent.columnCount == 0) {
int headerTemplate = OS.HeaderedItemsControl_HeaderTemplateProperty ();
OS.DependencyObject_ClearValue (handle, headerTemplate);
OS.GCHandle_Free (headerTemplate);
int header = OS.gcnew_SWTTreeViewRowPresenter (parent.handle);
if (header == 0) error (SWT.ERROR_NO_HANDLES);
OS.GridViewRowPresenterBase_Columns (header, parent.gvColumns);
OS.HeaderedItemsControl_Header (handle, header);
OS.GCHandle_Free (header);
} else {
int newLength = parent.columnCount + 1;
if (strings != null) {
String [] temp = new String [newLength];
System.arraycopy (strings, 0, temp, 0, index);
System.arraycopy (strings, index, temp, index + 1, parent.columnCount - index);
strings = temp;
}
if (images != null) {
Image [] temp = new Image [newLength];
System.arraycopy (images, 0, temp, 0, index);
System.arraycopy (images, index, temp, index + 1, parent.columnCount - index);
images = temp;
}
if (cellBackground != null) {
Color [] temp = new Color [newLength];
System.arraycopy (cellBackground, 0, temp, 0, index);
System.arraycopy (cellBackground, index, temp, index + 1, parent.columnCount - index);
cellBackground = temp;
}
if (cellForeground != null) {
Color [] temp = new Color [newLength];
System.arraycopy (cellForeground, 0, temp, 0, index);
System.arraycopy (cellForeground, index, temp, index + 1, parent.columnCount - index);
cellForeground = temp;
}
if (cellFont != null) {
Font [] temp = new Font [newLength];
System.arraycopy (cellFont, 0, temp, 0, index);
System.arraycopy (cellFont, index, temp, index + 1, parent.columnCount - index);
cellFont = temp;
}
}
int items = OS.ItemsControl_Items (handle);
for (int i=0; i<itemCount; i++) {
TreeItem item = parent.getItem (items, i, false);
if (item != null) {
item.columnAdded (index);
}
}
OS.GCHandle_Free (items);
}
void columnRemoved(int index) {
if (parent.columnCount == 0) {
OS.TreeViewItem_HeaderTemplate (handle, parent.headerTemplate);
} else {
if (strings == null) {
String [] temp = new String [parent.columnCount];
System.arraycopy (strings, 0, temp, 0, index);
System.arraycopy (strings, index + 1, temp, index, parent.columnCount - index);
strings = temp;
}
if (images != null) {
Image [] temp = new Image [parent.columnCount];
System.arraycopy (images, 0, temp, 0, index);
System.arraycopy (images, index + 1, temp, index, parent.columnCount - index);
images = temp;
}
if (cellBackground != null) {
Color [] temp = new Color [parent.columnCount];
System.arraycopy (cellBackground, 0, temp, 0, index);
System.arraycopy (cellBackground, index + 1, temp, index, parent.columnCount - index);
cellBackground = temp;
}
if (cellForeground != null) {
Color [] temp = new Color [parent.columnCount];
System.arraycopy (cellForeground, 0, temp, 0, index);
System.arraycopy (cellForeground, index + 1, temp, index, parent.columnCount - index);
cellForeground = temp;
}
if (cellFont != null) {
Font [] temp = new Font [parent.columnCount];
System.arraycopy (cellFont, 0, temp, 0, index);
System.arraycopy (cellFont, index + 1, temp, index, parent.columnCount - index);
cellFont = temp;
}
}
int items = OS.ItemsControl_Items (handle);
for (int i=0; i<itemCount; i++) {
TreeItem item = parent.getItem (items, i, false);
if (item != null) {
item.columnRemoved (index);
}
}
OS.GCHandle_Free (items);
}
void createHandle () {
if (handle == 0) {
handle = OS.gcnew_TreeViewItem ();
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
if (parent.columnCount != 0) {
int headerHandle = OS.gcnew_SWTTreeViewRowPresenter (parent.handle);
if (headerHandle == 0) error (SWT.ERROR_NO_HANDLES);
OS.GridViewRowPresenterBase_Columns (headerHandle, parent.gvColumns);
OS.HeaderedItemsControl_Header (handle, headerHandle);
OS.GCHandle_Free (headerHandle);
} else {
OS.TreeViewItem_HeaderTemplate (handle, parent.headerTemplate);
}
}
OS.Control_HorizontalContentAlignment (handle, OS.HorizontalAlignment_Stretch);
OS.Control_VerticalContentAlignment (handle, OS.VerticalAlignment_Stretch);
updateCheck ();
fixStyle ();
}
void deregister () {
display.removeWidget (handle);
}
void destroyWidget () {
parent.destroyItem (this);
releaseHandle ();
}
int findContentPresenter () {
updateLayout (handle);
int controlTemplate = OS.Control_Template (handle);
int headerName = createDotNetString ("PART_Header", false);
int contentPresenter = OS.FrameworkTemplate_FindName (controlTemplate, headerName, handle);
OS.GCHandle_Free (headerName);
OS.GCHandle_Free (controlTemplate);
return contentPresenter;
}
int findPart (int column, String partName) {
if (contentHandle == 0) updateLayout (handle);
if (contentHandle == 0) return 0;
int name = createDotNetString (partName, false);
int result = 0;
if (parent.columnCount == 0) {
int template = OS.TreeViewItem_HeaderTemplate (handle);
result = OS.FrameworkTemplate_FindName (template, name, contentHandle);
OS.GCHandle_Free (template);
} else {
int rowPresenter = OS.HeaderedItemsControl_Header (handle);
int contentPresenter = OS.VisualTreeHelper_GetChild (rowPresenter, column);
OS.GCHandle_Free (rowPresenter);
int columnHandle = OS.GridViewColumnCollection_default (parent.gvColumns, column);
int template = OS.GridViewColumn_CellTemplate (columnHandle);
OS.GCHandle_Free (columnHandle);
result = OS.FrameworkTemplate_FindName (template, name, contentPresenter);
OS.GCHandle_Free (contentPresenter);
OS.GCHandle_Free (template);
}
OS.GCHandle_Free (name);
return result;
}
void fixStyle () {
int itemStyle = OS.gcnew_Style ();
if (itemStyle == 0) error (SWT.ERROR_NO_HANDLES);
int setters = OS.Style_Setters (itemStyle);
int source = OS.gcnew_RelativeSource (OS.RelativeSourceMode_FindAncestor);
int treeViewType = OS.TreeView_typeid ();
/* clear the templated foreground color */
int property = OS.Control_ForegroundProperty ();
int propertyPath = createDotNetString ("Foreground", false);
int binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.RelativeSource_AncestorType (source, treeViewType);
OS.Binding_RelativeSource (binding, source);
int setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
/* bind font properties to tree instead of parent item */
property = OS.Control_FontSizeProperty ();
propertyPath = createDotNetString ("FontSize", false);
binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.Binding_RelativeSource (binding, source);
setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
property = OS.TextBlock_FontFamilyProperty ();
propertyPath = createDotNetString ("FontFamily", false);
binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.Binding_RelativeSource (binding, source);
setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
property = OS.TextBlock_FontStretchProperty ();
propertyPath = createDotNetString ("FontStretch", false);
binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.Binding_RelativeSource (binding, source);
setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
property = OS.TextBlock_FontWeightProperty ();
propertyPath = createDotNetString ("FontWeight", false);
binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.Binding_RelativeSource (binding, source);
setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
property = OS.TextBlock_FontStyleProperty ();
propertyPath = createDotNetString ("FontStyle", false);
binding = OS.gcnew_Binding (propertyPath);
if (binding == 0) error (SWT.ERROR_NO_HANDLES);
OS.GCHandle_Free (propertyPath);
OS.Binding_RelativeSource (binding, source);
setter = OS.gcnew_Setter (property, binding);
OS.GCHandle_Free (property);
OS.GCHandle_Free (binding);
OS.SetterBaseCollection_Add (setters, setter);
OS.GCHandle_Free (setter);
OS.FrameworkElement_Style (handle, itemStyle);
OS.GCHandle_Free (treeViewType);
OS.GCHandle_Free (source);
OS.GCHandle_Free (setters);
OS.GCHandle_Free (itemStyle);
}
/**
* Returns the receiver's background color.
*
* @return the background color
*
* @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>
*
* @since 2.0
*
*/
public Color getBackground () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
return background != null ? background : parent.getBackground ();
}
/**
* Returns the background color at the given column index in the receiver.
*
* @param index the column index
* @return the background color
*
* @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>
*
* @since 3.1
*/
public Color getBackground (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
int count = Math.max (1, parent.columnCount);
if (0 > index || index > count -1) return getBackground ();
if (cellBackground == null || cellBackground [index] == null) return getBackground ();
return cellBackground [index];
}
/**
* Returns a rectangle describing the size and location of the receiver's
* text relative to its parent.
*
* @return the bounding rectangle of the receiver's text
*
* @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 Rectangle getBounds () {
checkWidget ();
return getTextBounds (0);
}
/**
* Returns a rectangle describing the receiver's size and location
* relative to its parent at a column in the tree.
*
* @param index the index that specifies the column
* @return the receiver's bounding column rectangle
*
* @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>
*
* @since 3.1
*/
public Rectangle getBounds (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if (index != 0 && !(0 <= index && index < parent.columnCount)) return new Rectangle (0, 0, 0, 0);
if (!OS.UIElement_IsVisible (handle)) return new Rectangle (0, 0, 0, 0);
updateLayout (handle);
int point = OS.gcnew_Point (0, 0);
int stackPanel = findPart (index, Tree.CONTENTPANEL_PART_NAME);
int location = OS.UIElement_TranslatePoint (stackPanel, point, parent.handle);
int x = (int) OS.Point_X (location);
int y = (int) OS.Point_Y (location);
int width = (int) OS.FrameworkElement_ActualWidth (stackPanel);
int height = (int) OS.FrameworkElement_ActualHeight (stackPanel);
OS.GCHandle_Free (point);
OS.GCHandle_Free (location);
OS.GCHandle_Free (stackPanel);
return new Rectangle (x, y, width, height);
}
/**
* Returns <code>true</code> if the receiver is checked,
* and false otherwise. When the parent does not have
* the <code>CHECK style, return false.
* <p>
*
* @return the checked state
*
* @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 boolean getChecked () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if ((parent.style & SWT.CHECK) == 0) return false;
return checked;
}
/**
* Returns <code>true</code> if the receiver is expanded,
* and false otherwise.
* <p>
*
* @return the expanded state
*
* @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 boolean getExpanded () {
checkWidget ();
return OS.TreeViewItem_IsExpanded (handle);
}
/**
* Returns the font that the receiver will use to paint textual information for this item.
*
* @return the receiver's font
*
* @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>
*
* @since 3.0
*/
public Font getFont () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
return font != null ? font : parent.getFont ();
}
/**
* Returns the font that the receiver will use to paint textual information
* for the specified cell in this item.
*
* @param index the column index
* @return the receiver's font
*
* @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>
*
* @since 3.1
*/
public Font getFont (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
int count = Math.max (1, parent.columnCount);
if (0 > index || index > count -1) return getFont ();
if (cellFont == null || cellFont [index] == null) return getFont ();
return cellFont [index];
}
/**
* Returns the foreground color that the receiver will use to draw.
*
* @return the receiver's foreground color
*
* @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>
*
* @since 2.0
*
*/
public Color getForeground () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
return foreground != null ? foreground : parent.getForeground ();
}
/**
*
* Returns the foreground color at the given column index in the receiver.
*
* @param index the column index
* @return the foreground color
*
* @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>
*
* @since 3.1
*/
public Color getForeground (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
int count = Math.max (1, parent.columnCount);
if (0 > index || index > count -1) return getForeground ();
if (cellForeground == null || cellForeground [index] == null) return getForeground ();
return cellForeground [index];
}
/**
* Returns <code>true</code> if the receiver is grayed,
* and false otherwise. When the parent does not have
* the <code>CHECK style, return false.
* <p>
*
* @return the grayed state of the checkbox
*
* @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 boolean getGrayed () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if ((parent.style & SWT.CHECK) == 0) return false;
return false;
}
/**
* 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>
*
* @since 3.1
*/
public TreeItem getItem (int index) {
checkWidget ();
if (index < 0 || index >= itemCount) error (SWT.ERROR_INVALID_RANGE);
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
int items = OS.ItemsControl_Items (handle);
TreeItem item = parent.getItem (items, index, true);
OS.GCHandle_Free (items);
return item;
}
/**
* Returns the number of items contained in the receiver
* that are direct item children of 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 () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
return itemCount;
}
/**
* Returns a (possibly empty) array of <code>TreeItem</code>s which
* are the direct item children of 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 receiver's 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 TreeItem [] getItems () {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
int items = OS.ItemsControl_Items (handle);
TreeItem [] result = new TreeItem [itemCount];
for (int i = 0; i < result.length; i++) {
result [i] = parent.getItem (items, i, true);
}
OS.GCHandle_Free (items);
return result;
}
public Image getImage () {
checkWidget ();
return getImage (0);
}
/**
* Returns the image stored at the given column index in the receiver,
* or null if the image has not been set or if the column does not exist.
*
* @param index the column index
* @return the image stored at the given column index 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>
*
* @since 3.1
*/
public Image getImage (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if (images != null) {
if (0 <= index && index < images.length) return images [index];
}
return null;
}
/**
* Returns a rectangle describing the size and location
* relative to its parent of an image at a column in the
* tree.
*
* @param index the index that specifies the column
* @return the receiver's bounding image rectangle
*
* @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>
*
* @since 3.1
*/
public Rectangle getImageBounds (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if (index != 0 && !(0 <= index && index < parent.columnCount)) return new Rectangle (0, 0, 0, 0);
int parentHandle = parent.topHandle ();
int part = findPart (index, Tree.IMAGE_PART_NAME);
int point = OS.gcnew_Point (0, 0);
if (point == 0) error (SWT.ERROR_NO_HANDLES);
int location = OS.UIElement_TranslatePoint (part, point, parentHandle);
int x = (int) OS.Point_X (location);
int y = (int) OS.Point_Y (location);
OS.GCHandle_Free (point);
OS.GCHandle_Free (location);
int width = (int) OS.FrameworkElement_ActualWidth (part);
int height = (int) OS.FrameworkElement_ActualHeight (part);
OS.GCHandle_Free (part);
return new Rectangle (x, y, width, height);
}
/**
* Returns the receiver's parent, which must be a <code>Tree</code>.
*
* @return the receiver's parent
*
* @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 Tree getParent () {
checkWidget ();
return parent;
}
/**
* Returns the receiver's parent item, which must be a
* <code>TreeItem</code> or null when the receiver is a
* root.
*
* @return the receiver's parent item
*
* @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 TreeItem getParentItem () {
checkWidget ();
int parentItem = OS.FrameworkElement_Parent (handle);
TreeItem result = null;
if (!OS.Object_Equals (parentItem, parent.handle)) {
result = (TreeItem) display.getWidget (parentItem);
}
OS.GCHandle_Free (parentItem);
return result;
}
/**
* Returns a rectangle describing the size and location
* relative to its parent of the text at a column in the
* tree.
*
* @param index the index that specifies the column
* @return the receiver's bounding text rectangle
*
* @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>
*
* @since 3.3
*/
public Rectangle getTextBounds (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if (index != 0 && !(0 <= index && index < parent.columnCount)) return new Rectangle (0, 0, 0, 0);
int parentHandle = parent.topHandle ();
int point = OS.gcnew_Point (0, 0);
if (point == 0) error (SWT.ERROR_NO_HANDLES);
int textBlock = findPart (index, Tree.TEXT_PART_NAME);
int renderPanel = findPart (index, Table.RENDER_PANEL_NAME);
Rectangle result = new Rectangle (0, 0, 0, 0);
if (textBlock != 0 && renderPanel != 0) {
int location = OS.UIElement_TranslatePoint (textBlock, point, parentHandle);
int x = (int) OS.Point_X (location);
int y = (int) OS.Point_Y (location);
OS.GCHandle_Free (location);
double textWidth = OS.FrameworkElement_ActualWidth (textBlock);
int panelLocation = OS.UIElement_TranslatePoint (textBlock, point, renderPanel);
double visibleWidth = Math.max (0, OS.FrameworkElement_ActualWidth (renderPanel) - OS.Point_X (panelLocation));
OS.GCHandle_Free (panelLocation);
int width = (int) Math.min (textWidth, visibleWidth);
int height = (int) OS.FrameworkElement_ActualHeight (textBlock);
result = new Rectangle (x, y, width, height);
}
OS.GCHandle_Free (point);
if (textBlock != 0) OS.GCHandle_Free (textBlock);
if (renderPanel != 0) OS.GCHandle_Free (renderPanel);
return result;
}
public String getText () {
checkWidget ();
return getText (0);
}
/**
* Returns the text stored at the given column index in the receiver,
* or empty string if the text has not been set.
*
* @param index the column index
* @return the text stored at the given column index 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>
*
* @since 3.1
*/
public String getText (int index) {
checkWidget ();
if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
if (strings != null && 0 <= index && index < strings.length) {
return strings [index]!= null ? strings [index] : "";
}
return "";
}
Control getWidgetControl () {
return parent;
}
/**
* 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 item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the 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>
*
* @since 3.1
*/
public int indexOf (TreeItem item) {
checkWidget ();
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
int items = OS.ItemsControl_Items (handle);
int index = OS.ItemCollection_IndexOf (items, item.handle);
OS.GCHandle_Free (items);
return index;
}
void register () {
display.addWidget (handle, this);
}
void releaseChildren (boolean destroy) {
int items = OS.ItemsControl_Items (handle);
for (int i=0; i<itemCount; i++) {
TreeItem item = parent.getItem (items, i, false);
if (item != null && !item.isDisposed ()) item.release (false);
}
OS.GCHandle_Free (items);
super.releaseChildren (destroy);
}
void releaseHandle () {
super.releaseHandle ();
if (handle != 0) OS.GCHandle_Free (handle);
handle = 0;
if (contentHandle != 0) OS.GCHandle_Free (contentHandle);
contentHandle = 0;
parent = null;
}
void releaseWidget () {
super.releaseWidget ();
strings = null;
images = null;
cellBackground = cellForeground = null;
cellFont = null;
}
/**
* Removes all of the items from the receiver.
* <p>
* @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>
*
* @since 3.1
*/
public void removeAll () {
checkWidget ();
int items = OS.ItemsControl_Items (handle);
for (int i = 0; i < itemCount; i++) {
TreeItem item = parent.getItem (items, i, false);
if (item != null && !item.isDisposed ()) item.release (false);
}
parent.ignoreSelection = true;
OS.ItemCollection_Clear (items);
parent.ignoreSelection = false;
OS.GCHandle_Free (items);
}
/**
* Sets the receiver's background color to the color specified
* by the argument, or to the default system color for the item
* if the argument is null.
*
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 2.0
*
*/
public void setBackground (Color color) {
checkWidget ();
if (color != null && color.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
if (color != null && color.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
if (color != null) {
int brush = OS.gcnew_SolidColorBrush (color.handle);
OS.Control_Background (handle, brush);
OS.GCHandle_Free (brush);
} else {
int property = OS.Control_BackgroundProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
}
background = color;
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the background color at the given column index in the receiver
* to the color specified by the argument, or to the default system color for the item
* if the argument is null.
*
* @param index the column index
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 3.1
*
*/
public void setBackground (int index, Color color) {
checkWidget ();
if (color != null && color.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
int count = Math.max (1, parent.getColumnCount ());
if (0 > index || index > count - 1) return;
if (cellBackground == null) cellBackground = new Color [count];
cellBackground [index] = color;
updateBackground (index);
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the checked state of the receiver.
* <p>
*
* @param checked the new checked state
*
* @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 void setChecked (boolean checked) {
checkWidget ();
if ((parent.style & SWT.CHECK) == 0) return;
if (this.checked == checked) return;
this.checked = checked;
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
parent.ignoreSelection = true;
updateCheck ();
parent.ignoreSelection = false;
}
/**
* Sets the expanded state of the receiver.
* <p>
*
* @param expanded the new expanded state
*
* @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 void setExpanded (boolean expanded) {
checkWidget ();
OS.TreeViewItem_IsExpanded (handle, expanded);
}
/**
* Sets the font that the receiver will use to paint textual information
* for this item to the font specified by the argument, or to the default font
* for that kind of control if the argument is null.
*
* @param font the new font (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 3.0
*/
public void setFont (Font font){
checkWidget ();
if (font != null && font.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
if (font != null) {
int family = OS.Typeface_FontFamily (font.handle);
OS.Control_FontFamily (handle, family);
OS.GCHandle_Free (family);
int stretch = OS.Typeface_Stretch (font.handle);
OS.Control_FontStretch (handle, stretch);
OS.GCHandle_Free (stretch);
int style = OS.Typeface_Style (font.handle);
OS.Control_FontStyle (handle, style);
OS.GCHandle_Free (style);
int weight = OS.Typeface_Weight (font.handle);
OS.Control_FontWeight (handle, weight);
OS.GCHandle_Free (weight);
OS.Control_FontSize (handle, font.size);
} else {
int property = OS.Control_FontFamilyProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS. Control_FontStyleProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontStretchProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontWeightProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontSizeProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
}
this.font = font;
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the font that the receiver will use to paint textual information
* for the specified cell in this item to the font specified by the
* argument, or to the default font for that kind of control if the
* argument is null.
*
* @param index the column index
* @param font the new font (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 3.1
*/
public void setFont (int index, Font font) {
checkWidget ();
if (font != null && font.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
int count = Math.max (1, parent.getColumnCount ());
if (0 > index || index > count - 1) return;
if (cellFont == null) {
if (font == null) return;
cellFont = new Font [count];
}
Font oldFont = cellFont [index];
if (oldFont == font) return;
cellFont [index] = font;
if (oldFont != null && oldFont.equals (font)) return;
updateFont (index);
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the receiver's foreground color to the color specified
* by the argument, or to the default system color for the item
* if the argument is null.
*
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 2.0
*
*/
public void setForeground (Color color) {
checkWidget ();
if (color != null && color.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
if (color != null) {
int brush = OS.gcnew_SolidColorBrush (color.handle);
OS.Control_Foreground (handle, brush);
OS.GCHandle_Free (brush);
} else {
int property = OS.Control_ForegroundProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
}
foreground = color;
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the foreground color at the given column index in the receiver
* to the color specified by the argument, or to the default system color for the item
* if the argument is null.
*
* @param index the column index
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument 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>
*
* @since 3.1
*
*/
public void setForeground (int index, Color color){
checkWidget ();
if (color != null && color.isDisposed ()) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
int count = Math.max (1, parent.getColumnCount ());
if (0 > index || index > count - 1) return;
if (cellForeground == null) cellForeground = new Color [count];
cellForeground [index] = color;
updateForeground (index);
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
/**
* Sets the grayed state of the checkbox for this item. This state change
* only applies if the Tree was created with the SWT.CHECK style.
*
* @param grayed the new grayed state of the checkbox
*
* @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 void setGrayed (boolean grayed) {
checkWidget ();
if ((parent.style & SWT.CHECK) == 0) return;
if (this.grayed == grayed) return;
this.grayed = grayed;
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
parent.ignoreSelection = true;
updateCheck ();
parent.ignoreSelection = false;
}
/**
* Sets the image for multiple columns in the tree.
*
* @param images the array of new images
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the array of images is null</li>
* <li>ERROR_INVALID_ARGUMENT - if one of the images 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>
*
* @since 3.1
*/
public void setImage (Image [] images) {
checkWidget ();
if (images == null) error (SWT.ERROR_NULL_ARGUMENT);
for (int i=0; i<images.length; i++) {
setImage (i, images [i]);
}
}
/**
* Sets the receiver's image at a column.
*
* @param index the column index
* @param image the new image
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image 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>
*
* @since 3.1
*/
public void setImage (int index, Image image) {
checkWidget ();
if (image != null && image.isDisposed ()) {
error(SWT.ERROR_INVALID_ARGUMENT);
}
int count = Math.max (1, parent.getColumnCount ());
if (0 > index || index > count - 1) return;
if (images == null) images = new Image [count];
images [index] = image;
updateImage (index);
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
}
public void setImage (Image image) {
checkWidget ();
setImage (0, image);
}
/**
* Sets the number of child items contained in the receiver.
*
* @param count 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>
*
* @since 3.2
*/
public void setItemCount (int count) {
checkWidget ();
parent.setItemCount (this, count);
}
/**
* Sets the text for multiple columns in the tree.
*
* @param strings the array of new strings
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the text 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>
*
* @since 3.1
*/
public void setText (String [] strings) {
checkWidget ();
if (strings == null) error (SWT.ERROR_NULL_ARGUMENT);
for (int i=0; i<strings.length; i++) {
String string = strings [i];
if (string != null) setText (i, string);
}
}
/**
* Sets the receiver's text at a column
*
* @param index the column index
* @param string the new text
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the text 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>
*
* @since 3.1
*/
public void setText (int index, String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
int count = Math.max (1, parent.getColumnCount ());
if (0 > index || index > count - 1) return;
if (strings == null) strings = new String [count];
if ((parent.style & SWT.VIRTUAL) != 0) cached = true;
strings [index] = string;
updateText (index);
}
public void setText (String string) {
checkWidget ();
setText (0, string);
}
void updateBackground (int index) {
int panel = findPart (index, Tree.CONTENTPANEL_PART_NAME);
if (panel != 0) {
if (cellBackground != null && cellBackground [index] != null) {
int brush = OS.gcnew_SolidColorBrush (cellBackground [index].handle);
OS.Panel_Background (panel, brush);
OS.GCHandle_Free (brush);
} else {
int property = OS.Panel_BackgroundProperty ();
OS.DependencyObject_ClearValue (panel, property);
OS.GCHandle_Free (property);
}
OS.GCHandle_Free (panel);
}
}
void updateCheck () {
if ((parent.style & SWT.CHECK) == 0) return;
int checkBox = findPart (0, Tree.CHECKBOX_PART_NAME);
if (checkBox != 0) {
parent.ignoreSelection = true;
if (!grayed) {
OS.ToggleButton_IsChecked (checkBox, checked);
} else {
if (checked)
OS.ToggleButton_IsCheckedNullSetter (checkBox);
}
parent.ignoreSelection = false;
OS.GCHandle_Free (checkBox);
}
}
void updateFont (int index) {
if (cellFont == null) return;
int textBlock = findPart (index, Tree.TEXT_PART_NAME);
if (textBlock != 0) {
Font font = cellFont != null ? cellFont [index] : null;
if (font != null) {
int family = OS.Typeface_FontFamily (font.handle);
OS.TextBlock_FontFamily (textBlock, family);
OS.GCHandle_Free (family);
int stretch = OS.Typeface_Stretch (font.handle);
OS.TextBlock_FontStretch (textBlock, stretch);
OS.GCHandle_Free (stretch);
int style = OS.Typeface_Style (font.handle);
OS.TextBlock_FontStyle (textBlock, style);
OS.GCHandle_Free (style);
int weight = OS.Typeface_Weight (font.handle);
OS.TextBlock_FontWeight (textBlock, weight);
OS.GCHandle_Free (weight);
OS.TextBlock_FontSize (textBlock, font.size);
} else {
int property = OS.TextBlock_FontFamilyProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
property = OS.TextBlock_FontSizeProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
property = OS.TextBlock_FontStretchProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
property = OS.TextBlock_FontWeightProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
property = OS.TextBlock_FontStyleProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
}
OS.GCHandle_Free (textBlock);
}
}
void updateForeground (int index) {
int textBlock = findPart (index, Tree.TEXT_PART_NAME);
if (textBlock != 0) {
if (cellForeground != null && cellForeground [index] != null) {
int brush = OS.gcnew_SolidColorBrush (cellForeground [index].handle);
OS.TextBlock_Foreground (textBlock, brush);
OS.GCHandle_Free (brush);
} else {
int property = OS.Control_ForegroundProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
}
OS.GCHandle_Free (textBlock);
}
}
void updateImage (int index) {
if (images == null) return;
int img = findPart (index, Tree.IMAGE_PART_NAME);
if (img != 0) {
int src = 0;
if (images != null) src = images [index] != null ? images [index].handle : 0;
OS.Image_Source (img, src);
OS.GCHandle_Free (img);
}
}
void updateText (int index) {
int textBlock = findPart (index, Tree.TEXT_PART_NAME);
if (textBlock != 0) {
if (strings != null && strings [index] != null) {
int strPtr = createDotNetString (strings [index], false);
OS.TextBlock_Text (textBlock, strPtr);
OS.GCHandle_Free (strPtr);
} else {
int property = OS.TextBlock_TextProperty ();
OS.DependencyObject_ClearValue (textBlock, property);
OS.GCHandle_Free (property);
}
OS.GCHandle_Free (textBlock);
}
}
}