/*******************************************************************************
* Copyright (c) 2000, 2012 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.win32.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* Instances of this class represent a column in a tree widget.
* <p><dl>
* <dt><b>Styles:</b></dt>
* <dd>LEFT, RIGHT, CENTER</dd>
* <dt><b>Events:</b></dt>
* <dd> Move, Resize, Selection</dd>
* </dl>
* </p><p>
* Note: Only one of the styles LEFT, RIGHT and CENTER 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/#tree">Tree, TreeItem, TreeColumn snippets</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
*
* @since 3.1
* @noextend This class is not intended to be subclassed by clients.
*/
public class TreeColumn extends Item {
Tree parent;
boolean resizable, moveable;
String toolTipText;
int id;
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</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 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#LEFT
* @see SWT#RIGHT
* @see SWT#CENTER
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeColumn (Tree parent, int style) {
super (parent, checkStyle (style));
resizable = true;
this.parent = parent;
parent.createItem (this, parent.getColumnCount ());
}
/**
* Constructs a new instance of this class given its parent
* (which must be a <code>Tree</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>
* <p>
* Note that due to a restriction on some platforms, the first column
* is always left aligned.
* </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
* @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#LEFT
* @see SWT#RIGHT
* @see SWT#CENTER
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public TreeColumn (Tree parent, int style, int index) {
super (parent, checkStyle (style));
resizable = true;
this.parent = parent;
parent.createItem (this, index);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control is moved or resized, by sending
* it one of the messages defined in the <code>ControlListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener 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>
*
* @see ControlListener
* @see #removeControlListener
*/
public void addControlListener(ControlListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Resize,typedListener);
addListener (SWT.Move,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control is selected by the user, by sending
* it one of the messages defined in the <code>SelectionListener</code>
* interface.
* <p>
* <code>widgetSelected</code> is called when the column header is selected.
* <code>widgetDefaultSelected</code> is not called.
* </p>
*
* @param listener the listener which should be notified when the control is selected by the user
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener 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>
*
* @see SelectionListener
* @see #removeSelectionListener
* @see SelectionEvent
*/
public void addSelectionListener (SelectionListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Selection,typedListener);
addListener (SWT.DefaultSelection,typedListener);
}
static int checkStyle (int style) {
return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
void destroyWidget () {
parent.destroyItem (this);
releaseHandle ();
}
/**
* Returns a value which describes the position of the
* text or image in the receiver. The value will be one of
* <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>.
*
* @return the alignment
*
* @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 getAlignment () {
checkWidget ();
if ((style & SWT.LEFT) != 0) return SWT.LEFT;
if ((style & SWT.CENTER) != 0) return SWT.CENTER;
if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
return SWT.LEFT;
}
/**
* Gets the moveable attribute. A column that is
* not moveable cannot be reordered by the user
* by dragging the header but may be reordered
* by the programmer.
*
* @return the moveable attribute
*
* @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 Tree#getColumnOrder()
* @see Tree#setColumnOrder(int[])
* @see TreeColumn#setMoveable(boolean)
* @see SWT#Move
*
* @since 3.2
*/
public boolean getMoveable () {
checkWidget ();
return moveable;
}
String getNameText () {
return getText ();
}
/**
* 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;
}
/**
* Gets the resizable attribute. A column that is
* not resizable cannot be dragged by the user but
* may be resized by the programmer.
*
* @return the resizable attribute
*
* @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 getResizable () {
checkWidget ();
return resizable;
}
/**
* Returns the receiver's tool tip text, or null if it has
* not been set.
*
* @return the receiver's tool tip 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>
*
* @since 3.2
*/
public String getToolTipText () {
checkWidget();
return toolTipText;
}
/**
* Gets the width of the receiver.
*
* @return the width
*
* @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 getWidth () {
checkWidget ();
int index = parent.indexOf (this);
if (index == -1) return 0;
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader == 0) return 0;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, hdItem);
return hdItem.cxy;
}
/**
* Causes the receiver to be resized to its preferred size.
* For a composite, this involves computing the preferred size
* from its layout, if there is one.
*
* @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 pack () {
checkWidget ();
int index = parent.indexOf (this);
if (index == -1) return;
int columnWidth = 0;
long /*int*/ hwnd = parent.handle, hwndHeader = parent.hwndHeader;
RECT headerRect = new RECT ();
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, headerRect);
long /*int*/ hDC = OS.GetDC (hwnd);
long /*int*/ oldFont = 0, newFont = OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0);
if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont);
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM | OS.TVIF_STATE;
tvItem.hItem = OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
while (tvItem.hItem != 0) {
OS.SendMessage (hwnd, OS.TVM_GETITEM, 0, tvItem);
TreeItem item = tvItem.lParam != -1 ? parent.items [(int)/*64*/tvItem.lParam] : null;
if (item != null) {
int itemRight = 0;
if (parent.hooks (SWT.MeasureItem)) {
int detail = (tvItem.state & OS.TVIS_SELECTED) != 0 ? SWT.SELECTED : 0;
Event event = parent.sendMeasureItemEvent (item, index, hDC, detail);
if (isDisposed () || parent.isDisposed ()) break;
itemRight = event.x + event.width;
} else {
long /*int*/ hFont = item.fontHandle (index);
if (hFont != -1) hFont = OS.SelectObject (hDC, hFont);
RECT itemRect = item.getBounds (index, true, true, false, false, false, hDC);
if (hFont != -1) OS.SelectObject (hDC, hFont);
itemRight = itemRect.right;
}
columnWidth = Math.max (columnWidth, itemRight - headerRect.left);
}
tvItem.hItem = OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, tvItem.hItem);
}
RECT rect = new RECT ();
int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX;
TCHAR buffer = new TCHAR (parent.getCodePage (), text, false);
OS.DrawText (hDC, buffer, buffer.length (), rect, flags);
int headerWidth = rect.right - rect.left + Tree.HEADER_MARGIN;
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) headerWidth += Tree.HEADER_EXTRA;
if (image != null || parent.sortColumn == this) {
Image headerImage = null;
if (parent.sortColumn == this && parent.sortDirection != SWT.NONE) {
if (OS.COMCTL32_MAJOR < 6) {
headerImage = display.getSortImage (parent.sortDirection);
} else {
headerWidth += Tree.SORT_WIDTH;
}
} else {
headerImage = image;
}
if (headerImage != null) {
Rectangle bounds = headerImage.getBounds ();
headerWidth += bounds.width;
}
int margin = 0;
if (hwndHeader != 0 && OS.COMCTL32_VERSION >= OS.VERSION (5, 80)) {
margin = (int)/*64*/OS.SendMessage (hwndHeader, OS.HDM_GETBITMAPMARGIN, 0, 0);
} else {
margin = OS.GetSystemMetrics (OS.SM_CXEDGE) * 3;
}
headerWidth += margin * 2;
}
if (newFont != 0) OS.SelectObject (hDC, oldFont);
OS.ReleaseDC (hwnd, hDC);
int gridWidth = parent.linesVisible ? Tree.GRID_WIDTH : 0;
setWidth (Math.max (headerWidth, columnWidth + gridWidth));
}
void releaseHandle () {
super.releaseHandle ();
parent = null;
}
void releaseParent () {
super.releaseParent ();
if (parent.sortColumn == this) {
parent.sortColumn = null;
}
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is moved or resized.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener 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>
*
* @see ControlListener
* @see #addControlListener
*/
public void removeControlListener (ControlListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Move, listener);
eventTable.unhook (SWT.Resize, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is selected by the user.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener 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>
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener(SelectionListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Selection, listener);
eventTable.unhook (SWT.DefaultSelection,listener);
}
/**
* Controls how text and images will be displayed in the receiver.
* The argument should be one of <code>LEFT</code>, <code>RIGHT</code>
* or <code>CENTER</code>.
* <p>
* Note that due to a restriction on some platforms, the first column
* is always left aligned.
* </p>
* @param alignment the new alignment
*
* @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 setAlignment (int alignment) {
checkWidget ();
if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return;
int index = parent.indexOf (this);
if (index == -1 || index == 0) return;
style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader == 0) return;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_FORMAT;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, hdItem);
hdItem.fmt &= ~OS.HDF_JUSTIFYMASK;
if ((style & SWT.LEFT) == SWT.LEFT) hdItem.fmt |= OS.HDF_LEFT;
if ((style & SWT.CENTER) == SWT.CENTER) hdItem.fmt |= OS.HDF_CENTER;
if ((style & SWT.RIGHT) == SWT.RIGHT) hdItem.fmt |= OS.HDF_RIGHT;
OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
if (index != 0) {
long /*int*/ hwnd = parent.handle;
parent.forceResize ();
RECT rect = new RECT (), headerRect = new RECT ();
OS.GetClientRect (hwnd, rect);
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, headerRect);
rect.left = headerRect.left;
rect.right = headerRect.right;
OS.InvalidateRect (hwnd, rect, true);
}
}
public void setImage (Image image) {
checkWidget();
if (image != null && image.isDisposed ()) {
error (SWT.ERROR_INVALID_ARGUMENT);
}
super.setImage (image);
if (parent.sortColumn != this || parent.sortDirection != SWT.NONE) {
setImage (image, false, false);
}
}
void setImage (Image image, boolean sort, boolean right) {
int index = parent.indexOf (this);
if (index == -1) return;
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader == 0) return;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_FORMAT | OS.HDI_IMAGE | OS.HDI_BITMAP;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, hdItem);
hdItem.fmt &= ~OS.HDF_BITMAP_ON_RIGHT;
if (image != null) {
if (sort) {
hdItem.mask &= ~OS.HDI_IMAGE;
hdItem.fmt &= ~OS.HDF_IMAGE;
hdItem.fmt |= OS.HDF_BITMAP;
hdItem.hbm = image.handle;
} else {
hdItem.mask &= ~OS.HDI_BITMAP;
hdItem.fmt &= ~OS.HDF_BITMAP;
hdItem.fmt |= OS.HDF_IMAGE;
hdItem.iImage = parent.imageIndexHeader (image);
}
if (right) hdItem.fmt |= OS.HDF_BITMAP_ON_RIGHT;
} else {
hdItem.mask &= ~(OS.HDI_IMAGE | OS.HDI_BITMAP);
hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_BITMAP);
}
OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
}
/**
* Sets the moveable attribute. A column that is
* moveable can be reordered by the user by dragging
* the header. A column that is not moveable cannot be
* dragged by the user but may be reordered
* by the programmer.
*
* @param moveable the moveable attribute
*
* @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 Tree#setColumnOrder(int[])
* @see Tree#getColumnOrder()
* @see TreeColumn#getMoveable()
* @see SWT#Move
*
* @since 3.2
*/
public void setMoveable (boolean moveable) {
checkWidget ();
this.moveable = moveable;
}
/**
* Sets the resizable attribute. A column that is
* not resizable cannot be dragged by the user but
* may be resized by the programmer.
*
* @param resizable the resize attribute
*
* @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 setResizable (boolean resizable) {
checkWidget ();
this.resizable = resizable;
}
void setSortDirection (int direction) {
if (OS.COMCTL32_MAJOR >= 6) {
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader != 0) {
int index = parent.indexOf (this);
if (index == -1) return;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_FORMAT | OS.HDI_IMAGE;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, hdItem);
switch (direction) {
case SWT.UP:
hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_SORTDOWN);
hdItem.fmt |= OS.HDF_SORTUP;
if (image == null) hdItem.mask &= ~OS.HDI_IMAGE;
break;
case SWT.DOWN:
hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_SORTUP);
hdItem.fmt |= OS.HDF_SORTDOWN;
if (image == null) hdItem.mask &= ~OS.HDI_IMAGE;
break;
case SWT.NONE:
hdItem.fmt &= ~(OS.HDF_SORTUP | OS.HDF_SORTDOWN);
if (image != null) {
hdItem.fmt |= OS.HDF_IMAGE;
hdItem.iImage = parent.imageIndexHeader (image);
} else {
hdItem.fmt &= ~OS.HDF_IMAGE;
hdItem.mask &= ~OS.HDI_IMAGE;
}
break;
}
OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
long /*int*/ hwnd = parent.handle;
parent.forceResize ();
RECT rect = new RECT (), headerRect = new RECT ();
OS.GetClientRect (hwnd, rect);
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, headerRect);
rect.left = headerRect.left;
rect.right = headerRect.right;
OS.InvalidateRect (hwnd, rect, true);
}
}
} else {
switch (direction) {
case SWT.UP:
case SWT.DOWN:
setImage (display.getSortImage (direction), true, true);
break;
case SWT.NONE:
setImage (image, false, false);
break;
}
}
}
public void setText (String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
if (string.equals (text)) return;
int index = parent.indexOf (this);
if (index == -1) return;
super.setText (string);
/*
* Bug in Windows. When a column header contains a
* mnemonic character, Windows does not measure the
* text properly. This causes '...' to always appear
* at the end of the text. The fix is to remove
* mnemonic characters and replace doubled mnemonics
* with spaces.
*/
boolean replace = !OS.IsWinCE && OS.WIN32_VERSION <= OS.VERSION (4, 10);
long /*int*/ hHeap = OS.GetProcessHeap ();
TCHAR buffer = new TCHAR (parent.getCodePage (), fixMnemonic (string, replace), true);
int byteCount = buffer.length () * TCHAR.sizeof;
long /*int*/ pszText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory (pszText, buffer, byteCount);
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader == 0) return;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_TEXT;
hdItem.pszText = pszText;
long /*int*/ result = OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
if (pszText != 0) OS.HeapFree (hHeap, 0, pszText);
if (result == 0) error (SWT.ERROR_CANNOT_SET_TEXT);
}
/**
* Sets the receiver's tool tip text to the argument, which
* may be null indicating that the default tool tip for the
* control will be shown. For a control that has a default
* tool tip, such as the Tree control on Windows, setting
* the tool tip text to an empty string replaces the default,
* causing no tool tip text to be shown.
* <p>
* The mnemonic indicator (character '&') is not displayed in a tool tip.
* To display a single '&' in the tool tip, the character '&' can be
* escaped by doubling it in the string.
* </p>
*
* @param string the new tool tip text (or null)
*
* @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 setToolTipText (String string) {
checkWidget();
toolTipText = string;
long /*int*/ hwndHeaderToolTip = parent.headerToolTipHandle;
if (hwndHeaderToolTip == 0) {
parent.createHeaderToolTips ();
parent.updateHeaderToolTips ();
}
}
/**
* Sets the width of the receiver.
*
* @param width the new width
*
* @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 setWidth (int width) {
checkWidget ();
if (width < 0) return;
int index = parent.indexOf (this);
if (index == -1) return;
long /*int*/ hwndHeader = parent.hwndHeader;
if (hwndHeader == 0) return;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
hdItem.cxy = width;
OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
RECT headerRect = new RECT ();
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, headerRect);
parent.forceResize ();
long /*int*/ hwnd = parent.handle;
RECT rect = new RECT ();
OS.GetClientRect (hwnd, rect);
rect.left = headerRect.left;
OS.InvalidateRect (hwnd, rect, true);
parent.setScrollWidth ();
}
void updateToolTip (int index) {
long /*int*/ hwndHeaderToolTip = parent.headerToolTipHandle;
if (hwndHeaderToolTip != 0) {
long /*int*/ hwndHeader = parent.hwndHeader;
RECT rect = new RECT ();
if (OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, rect) != 0) {
TOOLINFO lpti = new TOOLINFO ();
lpti.cbSize = TOOLINFO.sizeof;
lpti.hwnd = hwndHeader;
lpti.uId = id;
lpti.left = rect.left;
lpti.top = rect.top;
lpti.right = rect.right;
lpti.bottom = rect.bottom;
OS.SendMessage (hwndHeaderToolTip, OS.TTM_NEWTOOLRECT, 0, lpti);
}
}
}
}