/*******************************************************************************
* 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.win32.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
/**
* Instances of this class provide an area for dynamically
* positioning the items they contain.
* <p>
* The item children that may be added to instances of this class
* must be of type <code>CoolItem</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, HORIZONTAL, VERTICAL</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* </p><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/#coolbar">CoolBar 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 CoolBar extends Composite {
CoolItem [] items;
CoolItem [] originalItems;
boolean locked;
boolean ignoreResize;
static final int /*long*/ ReBarProc;
static final TCHAR ReBarClass = new TCHAR (0, OS.REBARCLASSNAME, true);
static {
INITCOMMONCONTROLSEX icex = new INITCOMMONCONTROLSEX ();
icex.dwSize = INITCOMMONCONTROLSEX.sizeof;
icex.dwICC = OS.ICC_COOL_CLASSES;
OS.InitCommonControlsEx (icex);
WNDCLASS lpWndClass = new WNDCLASS ();
OS.GetClassInfo (0, ReBarClass, lpWndClass);
ReBarProc = lpWndClass.lpfnWndProc;
}
static final int SEPARATOR_WIDTH = 2;
static final int MAX_WIDTH = 0x7FFF;
static final int DEFAULT_COOLBAR_WIDTH = 0;
static final int DEFAULT_COOLBAR_HEIGHT = 0;
/**
* 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
* @see SWT#FLAT
* @see SWT#HORIZONTAL
* @see SWT#VERTICAL
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public CoolBar (Composite parent, int style) {
super (parent, checkStyle (style));
/*
* Ensure that either of HORIZONTAL or VERTICAL is set.
* NOTE: HORIZONTAL and VERTICAL have the same values
* as H_SCROLL and V_SCROLL so it is necessary to first
* clear these bits to avoid scroll bars and then reset
* the bits using the original style supplied by the
* programmer.
*
* NOTE: The CCS_VERT style cannot be applied when the
* widget is created because of this conflict.
*/
if ((style & SWT.VERTICAL) != 0) {
this.style |= SWT.VERTICAL;
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
OS.SetWindowLong (handle, OS.GWL_STYLE, bits | OS.CCS_VERT);
} else {
this.style |= SWT.HORIZONTAL;
}
}
int /*long*/ callWindowProc (int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) {
if (handle == 0) return 0;
return OS.CallWindowProc (ReBarProc, hwnd, msg, wParam, lParam);
}
static int checkStyle (int style) {
style |= SWT.NO_FOCUS;
/*
* Even though it is legal to create this widget
* with scroll bars, they serve no useful purpose
* because they do not automatically scroll the
* widget's client area. The fix is to clear
* the SWT style.
*/
return style & ~(SWT.H_SCROLL | SWT.V_SCROLL);
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget ();
int width = 0, height = 0;
int border = getBorderWidth ();
int newWidth = wHint == SWT.DEFAULT ? 0x3FFF : wHint + (border * 2);
int newHeight = hHint == SWT.DEFAULT ? 0x3FFF : hHint + (border * 2);
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (count != 0) {
ignoreResize = true;
boolean redraw = false;
if (OS.IsWindowVisible (handle)) {
if (OS.COMCTL32_MAJOR >= 6) {
redraw = true;
OS.UpdateWindow (handle);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
} else {
redraw = getDrawing();
if (redraw) {
OS.UpdateWindow (handle);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
}
}
RECT oldRect = new RECT ();
OS.GetWindowRect (handle, oldRect);
int oldWidth = oldRect.right - oldRect.left;
int oldHeight = oldRect.bottom - oldRect.top;
int flags = OS.SWP_NOACTIVATE | OS.SWP_NOMOVE | OS.SWP_NOREDRAW | OS.SWP_NOZORDER;
SetWindowPos (handle, 0, 0, 0, newWidth, newHeight, flags);
RECT rect = new RECT ();
OS.SendMessage (handle, OS.RB_GETRECT, count - 1, rect);
height = Math.max (height, rect.bottom);
SetWindowPos (handle, 0, 0, 0, oldWidth, oldHeight, flags);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_IDEALSIZE | OS.RBBIM_STYLE;
int rowWidth = 0;
for (int i = 0; i < count; i++) {
OS.SendMessage(handle, OS.RB_GETBANDINFO, i, rbBand);
if ((rbBand.fStyle & OS.RBBS_BREAK) != 0) {
width = Math.max(width, rowWidth);
rowWidth = 0;
}
rowWidth += rbBand.cxIdeal + getMargin (i);
}
width = Math.max(width, rowWidth);
if (redraw) {
if (OS.COMCTL32_MAJOR >= 6) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
} else {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
}
}
ignoreResize = false;
}
if (width == 0) width = DEFAULT_COOLBAR_WIDTH;
if (height == 0) height = DEFAULT_COOLBAR_HEIGHT;
if ((style & SWT.VERTICAL) != 0) {
int tmp = width;
width = height;
height = tmp;
}
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
height += border * 2;
width += border * 2;
return new Point (width, height);
}
void createHandle () {
super.createHandle ();
state &= ~(CANVAS | THEME_BACKGROUND);
/*
* Feature in Windows. When the control is created,
* it does not use the default system font. A new HFONT
* is created and destroyed when the control is destroyed.
* This means that a program that queries the font from
* this control, uses the font in another control and then
* destroys this control will have the font unexpectedly
* destroyed in the other control. The fix is to assign
* the font ourselves each time the control is created.
* The control will not destroy a font that it did not
* create.
*/
int /*long*/ hFont = OS.GetStockObject (OS.SYSTEM_FONT);
OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
}
void createItem (CoolItem item, int index) {
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (!(0 <= index && index <= count)) error (SWT.ERROR_INVALID_RANGE);
int id = 0;
while (id < items.length && items [id] != null) id++;
if (id == items.length) {
CoolItem [] newItems = new CoolItem [items.length + 4];
System.arraycopy (items, 0, newItems, 0, items.length);
items = newItems;
}
int /*long*/ hHeap = OS.GetProcessHeap ();
int /*long*/ lpText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, TCHAR.sizeof);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_TEXT | OS.RBBIM_STYLE | OS.RBBIM_ID;
rbBand.fStyle = OS.RBBS_VARIABLEHEIGHT | OS.RBBS_GRIPPERALWAYS;
if ((item.style & SWT.DROP_DOWN) != 0) {
rbBand.fStyle |= OS.RBBS_USECHEVRON;
}
rbBand.lpText = lpText;
rbBand.wID = id;
/*
* Feature in Windows. When inserting an item at end of a row,
* sometimes, Windows will begin to place the item on the right
* side of the cool bar. The fix is to resize the new items to
* the maximum size and then resize the next to last item to the
* ideal size.
*/
int lastIndex = getLastIndexOfRow (index - 1);
boolean fixLast = index == lastIndex + 1;
if (fixLast) {
rbBand.fMask |= OS.RBBIM_SIZE;
rbBand.cx = MAX_WIDTH;
}
/*
* Feature in Windows. Is possible that the item at index zero
* has the RBBS_BREAK flag set. When a new item is inserted at
* position zero, the previous item at position zero moves to
* a new line. The fix is to detect this case and clear the
* RBBS_BREAK flag on the previous item before inserting the
* new item.
*/
if (index == 0 && count > 0) {
getItem (0).setWrap (false);
}
/* Insert the item */
if (OS.SendMessage (handle, OS.RB_INSERTBAND, index, rbBand) == 0) {
error (SWT.ERROR_ITEM_NOT_ADDED);
}
/* Resize the next to last item to the ideal size */
if (fixLast) {
resizeToPreferredWidth (lastIndex);
}
OS.HeapFree (hHeap, 0, lpText);
items [item.id = id] = item;
int length = originalItems.length;
CoolItem [] newOriginals = new CoolItem [length + 1];
System.arraycopy (originalItems, 0, newOriginals, 0, index);
System.arraycopy (originalItems, index, newOriginals, index + 1, length - index);
newOriginals [index] = item;
originalItems = newOriginals;
}
void createWidget () {
super.createWidget ();
items = new CoolItem [4];
originalItems = new CoolItem [0];
}
void destroyItem (CoolItem item) {
int index = (int)/*64*/OS.SendMessage (handle, OS.RB_IDTOINDEX, item.id, 0);
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (count != 0) {
int lastIndex = getLastIndexOfRow (index);
if (index == lastIndex) {
/*
* Feature in Windows. If the last item in a row is
* given its ideal size, it will be placed at the far
* right hand edge of the coolbar. It is preferred
* that the last item appear next to the second last
* item. The fix is to size the last item of each row
* so that it occupies all the available space to the
* right in the row.
*/
resizeToMaximumWidth (lastIndex - 1);
}
}
/*
* Feature in Windows. When Windows removed a rebar
* band, it makes the band child invisible. The fix
* is to show the child.
*/
Control control = item.control;
boolean wasVisible = control != null && !control.isDisposed() && control.getVisible ();
/*
* When a wrapped item is being deleted, make the next
* item in the row wrapped in order to preserve the row.
* In order to avoid an unnecessary layout, temporarily
* ignore WM_SIZE. If the next item is wrapped then a
* row will be deleted and the WM_SIZE is necessary.
*/
CoolItem nextItem = null;
if (item.getWrap ()) {
if (index + 1 < count) {
nextItem = getItem (index + 1);
ignoreResize = !nextItem.getWrap ();
}
}
if (OS.SendMessage (handle, OS.RB_DELETEBAND, index, 0) == 0) {
error (SWT.ERROR_ITEM_NOT_REMOVED);
}
items [item.id] = null;
item.id = -1;
if (ignoreResize) {
nextItem.setWrap (true);
ignoreResize = false;
}
/* Restore the visible state of the control */
if (wasVisible) control.setVisible (true);
index = 0;
while (index < originalItems.length) {
if (originalItems [index] == item) break;
index++;
}
int length = originalItems.length - 1;
CoolItem [] newOriginals = new CoolItem [length];
System.arraycopy (originalItems, 0, newOriginals, 0, index);
System.arraycopy (originalItems, index + 1, newOriginals, index, length - index);
originalItems = newOriginals;
}
void drawThemeBackground (int /*long*/ hDC, int /*long*/ hwnd, RECT rect) {
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
if (background == -1 && (style & SWT.FLAT) != 0) {
Control control = findBackgroundControl ();
if (control != null && control.backgroundImage != null) {
fillBackground (hDC, control.getBackgroundPixel (), rect);
return;
}
}
}
RECT rect2 = new RECT ();
OS.GetClientRect (handle, rect2);
OS.MapWindowPoints (handle, hwnd, rect2, 2);
POINT lpPoint = new POINT ();
OS.SetWindowOrgEx (hDC, -rect2.left, -rect2.top, lpPoint);
OS.SendMessage (handle, OS.WM_PRINT, hDC, OS.PRF_CLIENT | OS.PRF_ERASEBKGND);
OS.SetWindowOrgEx (hDC, lpPoint.x, lpPoint.y, null);
}
Control findThemeControl () {
if ((style & SWT.FLAT) != 0) return this;
return background == -1 && backgroundImage == null ? this : super.findThemeControl ();
}
int getMargin (int index) {
int margin = 0;
if (OS.COMCTL32_MAJOR >= 6) {
MARGINS margins = new MARGINS ();
OS.SendMessage (handle, OS.RB_GETBANDMARGINS, 0, margins);
margin += margins.cxLeftWidth + margins.cxRightWidth;
}
RECT rect = new RECT ();
OS.SendMessage (handle, OS.RB_GETBANDBORDERS, index, rect);
if ((style & SWT.FLAT) != 0) {
/*
* Bug in Windows. When the style bit RBS_BANDBORDERS is not set
* the rectangle returned by RBS_BANDBORDERS is four pixels too small.
* The fix is to add four pixels to the result.
*/
if ((style & SWT.VERTICAL) != 0) {
margin += rect.top + 4;
} else {
margin += rect.left + 4;
}
} else {
if ((style & SWT.VERTICAL) != 0) {
margin += rect.top + rect.bottom;
} else {
margin += rect.left + rect.right;
}
}
if ((style & SWT.FLAT) == 0) {
if (!isLastItemOfRow (index)) {
margin += CoolBar.SEPARATOR_WIDTH;
}
}
return margin;
}
/**
* Returns the item that is currently displayed at the given,
* zero-relative index. Throws an exception if the index is
* out of range.
*
* @param index the visual index of the item to return
* @return the item at the given visual 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 CoolItem getItem (int index) {
checkWidget ();
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (!(0 <= index && index < count)) error (SWT.ERROR_INVALID_RANGE);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_ID;
OS.SendMessage (handle, OS.RB_GETBANDINFO, index, rbBand);
return items [rbBand.wID];
}
/**
* 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 () {
checkWidget ();
return (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
}
/**
* Returns an array of zero-relative ints that map
* the creation order of the receiver's items to the
* order in which they are currently being displayed.
* <p>
* Specifically, the indices of the returned array represent
* the current visual order of the items, and the contents
* of the array represent the creation order of the items.
* </p><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 current visual order of 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 int [] getItemOrder () {
checkWidget ();
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
int [] indices = new int [count];
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_ID;
for (int i=0; i<count; i++) {
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
CoolItem item = items [rbBand.wID];
int index = 0;
while (index<originalItems.length) {
if (originalItems [index] == item) break;
index++;
}
if (index == originalItems.length) error (SWT.ERROR_CANNOT_GET_ITEM);
indices [i] = index;
}
return indices;
}
/**
* Returns an array of <code>CoolItem</code>s in the order
* in which they are currently being displayed.
* <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 in their current visual order
*
* @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 CoolItem [] getItems () {
checkWidget ();
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
CoolItem [] result = new CoolItem [count];
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_ID;
for (int i=0; i<count; i++) {
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
result [i] = items [rbBand.wID];
}
return result;
}
/**
* Returns an array of points whose x and y coordinates describe
* the widths and heights (respectively) of the items in the receiver
* in the order in which they are currently being displayed.
*
* @return the receiver's item sizes in their current visual order
*
* @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 Point [] getItemSizes () {
checkWidget ();
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
Point [] sizes = new Point [count];
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_CHILDSIZE;
int separator = (style & SWT.FLAT) == 0 ? SEPARATOR_WIDTH : 0;
MARGINS margins = new MARGINS ();
for (int i=0; i<count; i++) {
RECT rect = new RECT ();
OS.SendMessage (handle, OS.RB_GETRECT, i, rect);
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
if (OS.COMCTL32_MAJOR >= 6) {
OS.SendMessage (handle, OS.RB_GETBANDMARGINS, 0, margins);
rect.left -= margins.cxLeftWidth;
rect.right += margins.cxRightWidth;
}
if (!isLastItemOfRow(i)) rect.right += separator;
if ((style & SWT.VERTICAL) != 0) {
sizes [i] = new Point (rbBand.cyChild, rect.right - rect.left);
} else {
sizes [i] = new Point (rect.right - rect.left, rbBand.cyChild);
}
}
return sizes;
}
int getLastIndexOfRow (int index) {
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (count == 0) return -1;
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_STYLE;
for (int i=index + 1; i<count; i++) {
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
if ((rbBand.fStyle & OS.RBBS_BREAK) != 0) {
return i - 1;
}
}
return count - 1;
}
boolean isLastItemOfRow (int index) {
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (index + 1 == count) return true;
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_STYLE;
OS.SendMessage (handle, OS.RB_GETBANDINFO, index + 1, rbBand);
return (rbBand.fStyle & OS.RBBS_BREAK) != 0;
}
/**
* Returns whether or not the receiver is 'locked'. When a coolbar
* is locked, its items cannot be repositioned.
*
* @return true if the coolbar is locked, false 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>
*
* @since 2.0
*/
public boolean getLocked () {
checkWidget ();
return locked;
}
/**
* Returns an array of ints that describe the zero-relative
* indices of any item(s) in the receiver that will begin on
* a new row. The 0th visible item always begins the first row,
* therefore it does not count as a wrap index.
*
* @return an array containing the receiver's wrap indices, or an empty array if all items are in one row
*
* @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 [] getWrapIndices () {
checkWidget ();
CoolItem [] items = getItems ();
int [] indices = new int [items.length];
int count = 0;
for (int i=0; i<items.length; i++) {
if (items [i].getWrap ()) indices [count++] = i;
}
int [] result = new int [count];
System.arraycopy (indices, 0, result, 0, count);
return result;
}
/**
* Searches the receiver's items in the order they are currently
* being displayed, 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 visual order index of the search item, or -1 if the item is not found
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the item is 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 (CoolItem item) {
checkWidget ();
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
return (int)/*64*/OS.SendMessage (handle, OS.RB_IDTOINDEX, item.id, 0);
}
void resizeToPreferredWidth (int index) {
/*
* Bug in Windows. When RB_GETBANDBORDERS is sent
* with an index out of range, Windows GP's. The
* fix is to ensure the index is in range.
*/
int count = (int)/*64*/OS.SendMessage(handle, OS.RB_GETBANDCOUNT, 0, 0);
if (0 <= index && index < count) {
REBARBANDINFO rbBand = new REBARBANDINFO();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_IDEALSIZE;
OS.SendMessage (handle, OS.RB_GETBANDINFO, index, rbBand);
RECT rect = new RECT ();
OS.SendMessage (handle, OS.RB_GETBANDBORDERS, index, rect);
rbBand.cx = rbBand.cxIdeal + rect.left;
if ((style & SWT.FLAT) == 0) rbBand.cx += rect.right;
rbBand.fMask = OS.RBBIM_SIZE;
OS.SendMessage (handle, OS.RB_SETBANDINFO, index, rbBand);
}
}
void resizeToMaximumWidth (int index) {
REBARBANDINFO rbBand = new REBARBANDINFO();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_SIZE;
rbBand.cx = MAX_WIDTH;
OS.SendMessage (handle, OS.RB_SETBANDINFO, index, rbBand);
}
void releaseChildren (boolean destroy) {
if (items != null) {
for (int i=0; i<items.length; i++) {
CoolItem item = items [i];
if (item != null && !item.isDisposed ()) {
item.release (false);
}
}
items = null;
}
super.releaseChildren (destroy);
}
void removeControl (Control control) {
super.removeControl (control);
for (int i=0; i<items.length; i++) {
CoolItem item = items [i];
if (item != null && item.control == control) {
item.setControl (null);
}
}
}
void setBackgroundPixel (int pixel) {
if (pixel == -1) pixel = defaultBackground ();
OS.SendMessage (handle, OS.RB_SETBKCOLOR, 0, pixel);
setItemColors ((int)/*64*/OS.SendMessage (handle, OS.RB_GETTEXTCOLOR, 0, 0), pixel);
/*
* Feature in Windows. For some reason, Windows
* does not fully erase the coolbar area and coolbar
* items when you set the background. The fix is
* to invalidate the coolbar area.
*/
if (!OS.IsWindowVisible (handle)) return;
if (OS.IsWinCE) {
OS.InvalidateRect (handle, null, true);
} else {
int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
OS.RedrawWindow (handle, null, 0, flags);
}
}
void setForegroundPixel (int pixel) {
if (pixel == -1) pixel = defaultForeground ();
OS.SendMessage (handle, OS.RB_SETTEXTCOLOR, 0, pixel);
setItemColors (pixel, (int)/*64*/OS.SendMessage (handle, OS.RB_GETBKCOLOR, 0, 0));
}
void setItemColors (int foreColor, int backColor) {
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_COLORS;
rbBand.clrFore = foreColor;
rbBand.clrBack = backColor;
for (int i=0; i<count; i++) {
OS.SendMessage (handle, OS.RB_SETBANDINFO, i, rbBand);
}
}
/**
* Sets the receiver's item order, wrap indices, and item sizes
* all at once. This method is typically used to restore the
* displayed state of the receiver to a previously stored state.
* <p>
* The item order is the order in which the items in the receiver
* should be displayed, given in terms of the zero-relative ordering
* of when the items were added.
* </p><p>
* The wrap indices are the indices of all item(s) in the receiver
* that will begin on a new row. The indices are given in the order
* specified by the item order. The 0th item always begins the first
* row, therefore it does not count as a wrap index. If wrap indices
* is null or empty, the items will be placed on one line.
* </p><p>
* The sizes are specified in an array of points whose x and y
* coordinates describe the new widths and heights (respectively)
* of the receiver's items in the order specified by the item order.
* </p>
*
* @param itemOrder an array of indices that describe the new order to display the items in
* @param wrapIndices an array of wrap indices, or null
* @param sizes an array containing the new sizes for each of the receiver's items in visual order
*
* @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>
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if item order or sizes is null</li>
* <li>ERROR_INVALID_ARGUMENT - if item order or sizes is not the same length as the number of items</li>
* </ul>
*/
public void setItemLayout (int [] itemOrder, int [] wrapIndices, Point [] sizes) {
checkWidget ();
setRedraw (false);
setItemOrder (itemOrder);
setWrapIndices (wrapIndices);
setItemSizes (sizes);
setRedraw (true);
}
/*
* Sets the order that the items in the receiver should
* be displayed in to the given argument which is described
* in terms of the zero-relative ordering of when the items
* were added.
*
* @param itemOrder the new order to display the items in
*
* @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>
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the item order is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the item order is not the same length as the number of items</li>
* </ul>
*/
void setItemOrder (int [] itemOrder) {
if (itemOrder == null) error (SWT.ERROR_NULL_ARGUMENT);
int itemCount = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (itemOrder.length != itemCount) error (SWT.ERROR_INVALID_ARGUMENT);
/* Ensure that itemOrder does not contain any duplicates. */
boolean [] set = new boolean [itemCount];
for (int i=0; i<itemOrder.length; i++) {
int index = itemOrder [i];
if (index < 0 || index >= itemCount) error (SWT.ERROR_INVALID_RANGE);
if (set [index]) error (SWT.ERROR_INVALID_ARGUMENT);
set [index] = true;
}
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
for (int i=0; i<itemOrder.length; i++) {
int id = originalItems [itemOrder [i]].id;
int index = (int)/*64*/OS.SendMessage (handle, OS.RB_IDTOINDEX, id, 0);
if (index != i) {
int lastItemSrcRow = getLastIndexOfRow (index);
int lastItemDstRow = getLastIndexOfRow (i);
if (index == lastItemSrcRow) {
resizeToPreferredWidth (index);
}
if (i == lastItemDstRow) {
resizeToPreferredWidth (i);
}
/* Move the item */
OS.SendMessage (handle, OS.RB_MOVEBAND, index, i);
if (index == lastItemSrcRow && index - 1 >= 0) {
resizeToMaximumWidth (index - 1);
}
if (i == lastItemDstRow) {
resizeToMaximumWidth (i);
}
}
}
}
/*
* Sets the width and height of the receiver's items to the ones
* specified by the argument, which is an array of points whose x
* and y coordinates describe the widths and heights (respectively)
* in the order in which the items are currently being displayed.
*
* @param sizes an array containing the new sizes for each of the receiver's items in visual order
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the array of sizes is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the array of sizes is not the same length as the number of items</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>
*/
void setItemSizes (Point [] sizes) {
if (sizes == null) error (SWT.ERROR_NULL_ARGUMENT);
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
if (sizes.length != count) error (SWT.ERROR_INVALID_ARGUMENT);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_ID;
for (int i=0; i<count; i++) {
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
items [rbBand.wID].setSize (sizes [i].x, sizes [i].y);
}
}
/**
* Sets whether or not the receiver is 'locked'. When a coolbar
* is locked, its items cannot be repositioned.
*
* @param locked lock the coolbar if true, otherwise unlock the coolbar
*
* @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 setLocked (boolean locked) {
checkWidget ();
this.locked = locked;
int count = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBANDCOUNT, 0, 0);
REBARBANDINFO rbBand = new REBARBANDINFO ();
rbBand.cbSize = REBARBANDINFO.sizeof;
rbBand.fMask = OS.RBBIM_STYLE;
for (int i=0; i<count; i++) {
OS.SendMessage (handle, OS.RB_GETBANDINFO, i, rbBand);
if (locked) {
rbBand.fStyle |= OS.RBBS_NOGRIPPER;
} else {
rbBand.fStyle &= ~OS.RBBS_NOGRIPPER;
}
OS.SendMessage (handle, OS.RB_SETBANDINFO, i, rbBand);
}
}
/**
* Sets the indices of all item(s) in the receiver that will
* begin on a new row. The indices are given in the order in
* which they are currently being displayed. The 0th item
* always begins the first row, therefore it does not count
* as a wrap index. If indices is null or empty, the items
* will be placed on one line.
*
* @param indices an array of wrap indices, 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>
*/
public void setWrapIndices (int [] indices) {
checkWidget ();
if (indices == null) indices = new int [0];
int count = getItemCount ();
for (int i=0; i<indices.length; i++) {
if (indices [i] < 0 || indices [i] >= count) {
error (SWT.ERROR_INVALID_RANGE);
}
}
setRedraw (false);
CoolItem [] items = getItems ();
for (int i=0; i<items.length; i++) {
CoolItem item = items [i];
if (item.getWrap ()) {
resizeToPreferredWidth (i - 1);
item.setWrap (false);
}
}
resizeToMaximumWidth (count - 1);
for (int i=0; i<indices.length; i++) {
int index = indices [i];
if (0 <= index && index < items.length) {
CoolItem item = items [index];
item.setWrap (true);
resizeToMaximumWidth (index - 1);
}
}
setRedraw (true);
}
int widgetStyle () {
int bits = super.widgetStyle () | OS.CCS_NODIVIDER | OS.CCS_NORESIZE;
bits |= OS.RBS_VARHEIGHT | OS.RBS_DBLCLKTOGGLE;
if ((style & SWT.FLAT) == 0) bits |= OS.RBS_BANDBORDERS;
return bits;
}
TCHAR windowClass () {
return ReBarClass;
}
int /*long*/ windowProc () {
return ReBarProc;
}
LRESULT WM_COMMAND (int /*long*/ wParam, int /*long*/ lParam) {
/*
* Feature in Windows. When the coolbar window
* proc processes WM_COMMAND, it forwards this
* message to its parent. This is done so that
* children of this control that send this message
* type to their parent will notify not only
* this control but also the parent of this control,
* which is typically the application window and
* the window that is looking for the message.
* If the control did not forward the message,
* applications would have to subclass the control
* window to see the message. Because the control
* window is subclassed by SWT, the message
* is delivered twice, once by SWT and once when
* the message is forwarded by the window proc.
* The fix is to avoid calling the window proc
* for this control.
*/
LRESULT result = super.WM_COMMAND (wParam, lParam);
if (result != null) return result;
return LRESULT.ZERO;
}
LRESULT WM_ERASEBKGND (int /*long*/ wParam, int /*long*/ lParam) {
LRESULT result = super.WM_ERASEBKGND (wParam, lParam);
/*
* Feature in Windows. For some reason, Windows
* does not fully erase the area that the cool bar
* occupies when the size of the cool bar is larger
* than the space occupied by the cool bar items.
* The fix is to erase the cool bar background.
*
* NOTE: On versions of Windows prior to XP, for
* some reason, the cool bar draws separators in
* WM_ERASEBKGND. Therefore it is essential to run
* the cool bar window proc after the background has
* been erased.
*/
if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) {
drawBackground (wParam);
return null;
}
return result;
}
LRESULT WM_NOTIFY (int /*long*/ wParam, int /*long*/ lParam) {
/*
* Feature in Windows. When the cool bar window
* proc processes WM_NOTIFY, it forwards this
* message to its parent. This is done so that
* children of this control that send this message
* type to their parent will notify not only
* this control but also the parent of this control,
* which is typically the application window and
* the window that is looking for the message.
* If the control did not forward the message,
* applications would have to subclass the control
* window to see the message. Because the control
* window is subclassed by SWT, the message
* is delivered twice, once by SWT and once when
* the message is forwarded by the window proc.
* The fix is to avoid calling the window proc
* for this control.
*/
LRESULT result = super.WM_NOTIFY (wParam, lParam);
if (result != null) return result;
return LRESULT.ZERO;
}
LRESULT WM_SETREDRAW (int /*long*/ wParam, int /*long*/ lParam) {
LRESULT result = super.WM_SETREDRAW (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. When redraw is turned off, the rebar
* control does not call the default window proc. This means
* that the rebar will redraw and children of the rebar will
* also redraw. The fix is to call both the rebar window proc
* and the default window proc.
*
* NOTE: The rebar control can resize itself in WM_SETREDRAW.
* When redraw is turned off by the default window proc, this
* can leave pixel corruption in the parent. The fix is to
* detect the size change and damage the previous area in the
* parent.
*
* NOTE: In version 6.00 of COMCTL32.DLL, when WM_SETREDRAW
* is off, we cannot detect that the size has changed causing
* pixel corruption. The fix is to disallow WM_SETREDRAW by
* not running the default window proc or the rebar window
* proc.
*/
if (OS.COMCTL32_MAJOR >= 6) return LRESULT.ZERO;
Rectangle rect = getBounds ();
int /*long*/ code = callWindowProc (handle, OS.WM_SETREDRAW, wParam, lParam);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, wParam, lParam);
if (!rect.equals (getBounds ())) {
parent.redraw (rect.x, rect.y, rect.width, rect.height, true);
}
return new LRESULT (code);
}
LRESULT WM_SIZE (int /*long*/ wParam, int /*long*/ lParam) {
if (ignoreResize) {
int /*long*/ code = callWindowProc (handle, OS.WM_SIZE, wParam, lParam);
if (code == 0) return LRESULT.ZERO;
return new LRESULT (code);
}
//TEMPORARY CODE
// if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
// if (background == -1 && (style & SWT.FLAT) == 0) {
// OS.InvalidateRect (handle, null, true);
// }
// }
return super.WM_SIZE (wParam, lParam);
}
LRESULT wmNotifyChild (NMHDR hdr, int /*long*/ wParam, int /*long*/ lParam) {
switch (hdr.code) {
case OS.RBN_BEGINDRAG: {
int pos = OS.GetMessagePos ();
POINT pt = new POINT ();
OS.POINTSTOPOINT (pt, pos);
OS.ScreenToClient (handle, pt);
int button = display.lastButton != 0 ? display.lastButton : 1;
if (!sendDragEvent (button, pt.x, pt.y)) return LRESULT.ONE;
break;
}
case OS.RBN_CHILDSIZE: {
/*
* Bug in Windows. When Windows sets the size of the rebar band
* child and the child is a combo box, the size of the drop down
* portion of the combo box is resized to zero. The fix is to set
* the size of the control to the current size after the rebar has
* already resized it. If the control is not a combo, this does
* nothing. If the control is a combo, the drop down portion is
* recalculated.
*/
NMREBARCHILDSIZE lprbcs = new NMREBARCHILDSIZE ();
OS.MoveMemory (lprbcs, lParam, NMREBARCHILDSIZE.sizeof);
if (lprbcs.uBand != -1) {
CoolItem item = items [lprbcs.wID];
Control control = item.control;
if (control != null) {
int width = lprbcs.rcChild_right - lprbcs.rcChild_left;
int height = lprbcs.rcChild_bottom - lprbcs.rcChild_top;
control.setBounds (lprbcs.rcChild_left, lprbcs.rcChild_top, width, height);
}
}
break;
}
case OS.RBN_HEIGHTCHANGE: {
if (!ignoreResize) {
Point size = getSize ();
int border = getBorderWidth ();
int barHeight = (int)/*64*/OS.SendMessage (handle, OS.RB_GETBARHEIGHT, 0, 0);
if ((style & SWT.VERTICAL) != 0) {
setSize (barHeight + 2 * border, size.y);
} else {
setSize (size.x, barHeight + 2 * border);
}
}
break;
}
case OS.RBN_CHEVRONPUSHED: {
NMREBARCHEVRON lpnm = new NMREBARCHEVRON ();
OS.MoveMemory (lpnm, lParam, NMREBARCHEVRON.sizeof);
CoolItem item = items [lpnm.wID];
if (item != null) {
Event event = new Event();
event.detail = SWT.ARROW;
if ((style & SWT.VERTICAL) != 0) {
event.x = lpnm.right;
event.y = lpnm.top;
} else {
event.x = lpnm.left;
event.y = lpnm.bottom;
}
item.postEvent (SWT.Selection, event);
}
break;
}
case OS.NM_CUSTOMDRAW: {
/*
* Bug in Windows. On versions of Windows prior to XP,
* drawing the background color in NM_CUSTOMDRAW erases
* the separators. The fix is to draw the background
* in WM_ERASEBKGND.
*/
if (OS.COMCTL32_MAJOR < 6) break;
if (findBackgroundControl () != null || (style & SWT.FLAT) != 0) {
NMCUSTOMDRAW nmcd = new NMCUSTOMDRAW ();
OS.MoveMemory (nmcd, lParam, NMCUSTOMDRAW.sizeof);
switch (nmcd.dwDrawStage) {
case OS.CDDS_PREERASE:
return new LRESULT (OS.CDRF_SKIPDEFAULT | OS.CDRF_NOTIFYPOSTERASE);
case OS.CDDS_POSTERASE:
drawBackground (nmcd.hdc);
break;
}
}
break;
}
}
return super.wmNotifyChild (hdr, wParam, lParam);
}
}
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