/*******************************************************************************
* Copyright (c) 2000, 2013 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.*;
import org.eclipse.swt.accessibility.*;
/**
* Instances of this class represent a selectable
* user interface object that displays a text with
* links.
* <p>
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>Selection</dd>
* </dl>
* <p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/snippets/#link">Link 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>
*
* @since 3.1
* @noextend This class is not intended to be subclassed by clients.
*/
public class Link extends Control {
String text;
TextLayout layout;
Color linkColor, disabledColor;
Point [] offsets;
Point selection;
String [] ids;
int [] mnemonics;
int focusIndex, mouseDownIndex;
long /*int*/ font;
static final RGB LINK_FOREGROUND = new RGB (0, 51, 153);
static final long /*int*/ LinkProc;
static final TCHAR LinkClass = new TCHAR (0, OS.WC_LINK, true);
static {
if (OS.COMCTL32_MAJOR >= 6) {
WNDCLASS lpWndClass = new WNDCLASS ();
OS.GetClassInfo (0, LinkClass, lpWndClass);
LinkProc = lpWndClass.lpfnWndProc;
/*
* Feature in Windows. The SysLink window class
* does not include CS_DBLCLKS. This means that these
* controls will not get double click messages such as
* WM_LBUTTONDBLCLK. The fix is to register a new
* window class with CS_DBLCLKS.
*
* NOTE: Screen readers look for the exact class name
* of the control in order to provide the correct kind
* of assistance. Therefore, it is critical that the
* new window class have the same name. It is possible
* to register a local window class with the same name
* as a global class. Since bits that affect the class
* are being changed, it is possible that other native
* code, other than SWT, could create a control with
* this class name, and fail unexpectedly.
*/
long /*int*/ hInstance = OS.GetModuleHandle (null);
long /*int*/ hHeap = OS.GetProcessHeap ();
lpWndClass.hInstance = hInstance;
lpWndClass.style &= ~OS.CS_GLOBALCLASS;
lpWndClass.style |= OS.CS_DBLCLKS;
int byteCount = LinkClass.length () * TCHAR.sizeof;
long /*int*/ lpszClassName = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory (lpszClassName, LinkClass, byteCount);
lpWndClass.lpszClassName = lpszClassName;
OS.RegisterClass (lpWndClass);
OS.HeapFree (hHeap, 0, lpszClassName);
} else {
LinkProc = 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 Widget#checkSubclass
* @see Widget#getStyle
*/
public Link (Composite parent, int style) {
super (parent, style);
}
/**
* 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 control is selected by the user.
* <code>widgetDefaultSelected</code> is not called.
* </p>
*
* @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 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);
}
long /*int*/ callWindowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) {
if (handle == 0) return 0;
if (LinkProc != 0) {
/*
* Feature in Windows. By convention, native Windows controls
* check for a non-NULL wParam, assume that it is an HDC and
* paint using that device. The SysLink control does not.
* The fix is to check for an HDC and use WM_PRINTCLIENT.
*/
switch (msg) {
case OS.WM_PAINT:
if (wParam != 0) {
OS.SendMessage (hwnd, OS.WM_PRINTCLIENT, wParam, 0);
return 0;
}
break;
}
return OS.CallWindowProc (LinkProc, hwnd, msg, wParam, lParam);
}
return OS.DefWindowProc (hwnd, msg, wParam, lParam);
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget ();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
int width, height;
if (OS.COMCTL32_MAJOR >= 6) {
long /*int*/ hDC = OS.GetDC (handle);
long /*int*/ newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
long /*int*/ oldFont = OS.SelectObject (hDC, newFont);
if (text.length () > 0) {
TCHAR buffer = new TCHAR (getCodePage (), parse (text), false);
RECT rect = new RECT ();
int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX;
if (wHint != SWT.DEFAULT) {
flags |= OS.DT_WORDBREAK;
rect.right = wHint;
}
OS.DrawText (hDC, buffer, buffer.length (), rect, flags);
width = rect.right - rect.left;
height = rect.bottom;
} else {
TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW () : new TEXTMETRICA ();
OS.GetTextMetrics (hDC, lptm);
width = 0;
height = lptm.tmHeight;
}
if (newFont != 0) OS.SelectObject (hDC, oldFont);
OS.ReleaseDC (handle, hDC);
} else {
int layoutWidth = layout.getWidth ();
//TEMPORARY CODE
if (wHint == 0) {
layout.setWidth (1);
Rectangle rect = layout.getBounds ();
width = 0;
height = rect.height;
} else {
layout.setWidth (wHint);
Rectangle rect = layout.getBounds ();
width = rect.width;
height = rect.height;
}
layout.setWidth (layoutWidth);
}
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
int border = getBorderWidth ();
width += border * 2;
height += border * 2;
return new Point (width, height);
}
void createHandle () {
super.createHandle ();
state |= THEME_BACKGROUND;
if (OS.COMCTL32_MAJOR < 6) {
layout = new TextLayout (display);
if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (4, 10)) {
linkColor = Color.win32_new (display, OS.GetSysColor (OS.COLOR_HOTLIGHT));
} else {
linkColor = new Color (display, LINK_FOREGROUND);
}
disabledColor = Color.win32_new (display, OS.GetSysColor (OS.COLOR_GRAYTEXT));
offsets = new Point [0];
ids = new String [0];
mnemonics = new int [0];
selection = new Point (-1, -1);
focusIndex = mouseDownIndex = -1;
}
}
void createWidget () {
super.createWidget ();
text = "";
if (OS.COMCTL32_MAJOR < 6) {
if ((style & SWT.MIRRORED) != 0) {
layout.setOrientation (SWT.RIGHT_TO_LEFT);
}
initAccessible ();
}
}
void drawWidget (GC gc, RECT rect) {
drawBackground (gc.handle, rect);
int selStart = selection.x;
int selEnd = selection.y;
if (selStart > selEnd) {
selStart = selection.y;
selEnd = selection.x;
}
// temporary code to disable text selection
selStart = selEnd = -1;
if (!OS.IsWindowEnabled (handle)) gc.setForeground (disabledColor);
layout.draw (gc, 0, 0, selStart, selEnd, null, null);
if (hasFocus () && focusIndex != -1) {
Rectangle [] rects = getRectangles (focusIndex);
for (int i = 0; i < rects.length; i++) {
Rectangle rectangle = rects [i];
gc.drawFocus (rectangle.x, rectangle.y, rectangle.width, rectangle.height);
}
}
if (hooks (SWT.Paint) || filters (SWT.Paint)) {
Event event = new Event ();
event.gc = gc;
event.x = rect.left;
event.y = rect.top;
event.width = rect.right - rect.left;
event.height = rect.bottom - rect.top;
sendEvent (SWT.Paint, event);
event.gc = null;
}
}
void enableWidget (boolean enabled) {
if (OS.COMCTL32_MAJOR >= 6) {
LITEM item = new LITEM ();
item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
item.stateMask = OS.LIS_ENABLED;
item.state = enabled ? OS.LIS_ENABLED : 0;
while (OS.SendMessage (handle, OS.LM_SETITEM, 0, item) != 0) {
item.iLink++;
}
} else {
TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
for (int i = 0; i < offsets.length; i++) {
Point point = offsets [i];
layout.setStyle (linkStyle, point.x, point.y);
}
}
redraw ();
/*
* Feature in Windows. For some reason, setting
* LIS_ENABLED state using LM_SETITEM causes the
* SysLink to become enabled. To be specific,
* calling IsWindowEnabled() returns true. The
* fix is disable the SysLink after LM_SETITEM.
*/
super.enableWidget (enabled);
}
void initAccessible () {
Accessible accessible = getAccessible ();
accessible.addAccessibleListener (new AccessibleAdapter () {
public void getName (AccessibleEvent e) {
e.result = parse (text);
}
});
accessible.addAccessibleControlListener (new AccessibleControlAdapter () {
public void getChildAtPoint (AccessibleControlEvent e) {
e.childID = ACC.CHILDID_SELF;
}
public void getLocation (AccessibleControlEvent e) {
Rectangle rect = display.map (getParent (), null, getBounds ());
e.x = rect.x;
e.y = rect.y;
e.width = rect.width;
e.height = rect.height;
}
public void getChildCount (AccessibleControlEvent e) {
e.detail = 0;
}
public void getRole (AccessibleControlEvent e) {
e.detail = ACC.ROLE_LINK;
}
public void getState (AccessibleControlEvent e) {
e.detail = ACC.STATE_FOCUSABLE;
if (hasFocus ()) e.detail |= ACC.STATE_FOCUSED;
}
public void getDefaultAction (AccessibleControlEvent e) {
e.result = SWT.getMessage ("SWT_Press"); //$NON-NLS-1$
}
public void getSelection (AccessibleControlEvent e) {
if (hasFocus ()) e.childID = ACC.CHILDID_SELF;
}
public void getFocus (AccessibleControlEvent e) {
if (hasFocus ()) e.childID = ACC.CHILDID_SELF;
}
});
}
String getNameText () {
return getText ();
}
Rectangle [] getRectangles (int linkIndex) {
int lineCount = layout.getLineCount ();
Rectangle [] rects = new Rectangle [lineCount];
int [] lineOffsets = layout.getLineOffsets ();
Point point = offsets [linkIndex];
int lineStart = 1;
while (point.x > lineOffsets [lineStart]) lineStart++;
int lineEnd = 1;
while (point.y > lineOffsets [lineEnd]) lineEnd++;
int index = 0;
if (lineStart == lineEnd) {
rects [index++] = layout.getBounds (point.x, point.y);
} else {
rects [index++] = layout.getBounds (point.x, lineOffsets [lineStart]-1);
rects [index++] = layout.getBounds (lineOffsets [lineEnd-1], point.y);
if (lineEnd - lineStart > 1) {
for (int i = lineStart; i < lineEnd - 1; i++) {
rects [index++] = layout.getLineBounds (i);
}
}
}
if (rects.length != index) {
Rectangle [] tmp = new Rectangle [index];
System.arraycopy (rects, 0, tmp, 0, index);
rects = tmp;
}
return rects;
}
/**
* Returns the receiver's text, which will be an empty
* string if it has never been set.
*
* @return 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 String getText () {
checkWidget ();
return text;
}
boolean mnemonicHit (char key) {
if (mnemonics != null) {
char uckey = Character.toUpperCase (key);
String parsedText = parse(text);
for (int i = 0; i < mnemonics.length - 1; i++) {
if (mnemonics[i] != -1) {
char mnemonic = parsedText.charAt(mnemonics[i]);
if (uckey == Character.toUpperCase (mnemonic)) {
if (!setFocus ()) return false;
if (OS.COMCTL32_MAJOR >= 6) {
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
LITEM item = new LITEM ();
item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
item.stateMask = OS.LIS_FOCUSED;
while (item.iLink < mnemonics.length) {
if (item.iLink != i) OS.SendMessage (handle, OS.LM_SETITEM, 0, item);
item.iLink++;
}
item.iLink = i;
item.state = OS.LIS_FOCUSED;
OS.SendMessage (handle, OS.LM_SETITEM, 0, item);
/* Feature in Windows. For some reason, setting the focus to
* any item but first causes the control to clear the WS_TABSTOP
* bit. The fix is always to reset the bit.
*/
OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
} else {
focusIndex = i;
redraw ();
}
return true;
}
}
}
}
return false;
}
boolean mnemonicMatch (char key) {
if (mnemonics != null) {
char uckey = Character.toUpperCase (key);
String parsedText = parse(text);
for (int i = 0; i < mnemonics.length - 1; i++) {
if (mnemonics[i] != -1) {
char mnemonic = parsedText.charAt(mnemonics[i]);
if (uckey == Character.toUpperCase (mnemonic)) {
return true;
}
}
}
}
return false;
}
String parse (String string) {
int length = string.length ();
offsets = new Point [length / 4];
ids = new String [length / 4];
mnemonics = new int [length / 4 + 1];
StringBuffer result = new StringBuffer ();
char [] buffer = new char [length];
string.getChars (0, string.length (), buffer, 0);
int index = 0, state = 0, linkIndex = 0;
int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0;
while (index < length) {
char c = Character.toLowerCase (buffer [index]);
switch (state) {
case 0:
if (c == '<') {
tagStart = index;
state++;
}
break;
case 1:
if (c == 'a') state++;
break;
case 2:
switch (c) {
case 'h':
state = 7;
break;
case '>':
linkStart = index + 1;
state++;
break;
default:
if (Character.isWhitespace(c)) break;
else state = 13;
}
break;
case 3:
if (c == '<') {
endtagStart = index;
state++;
}
break;
case 4:
state = c == '/' ? state + 1 : 3;
break;
case 5:
state = c == 'a' ? state + 1 : 3;
break;
case 6:
if (c == '>') {
mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result);
int offset = result.length ();
parseMnemonics (buffer, linkStart, endtagStart, result);
offsets [linkIndex] = new Point (offset, result.length () - 1);
if (ids [linkIndex] == null) {
ids [linkIndex] = new String (buffer, linkStart, endtagStart - linkStart);
}
linkIndex++;
start = tagStart = linkStart = endtagStart = refStart = index + 1;
state = 0;
} else {
state = 3;
}
break;
case 7:
state = c == 'r' ? state + 1 : 0;
break;
case 8:
state = c == 'e' ? state + 1 : 0;
break;
case 9:
state = c == 'f' ? state + 1 : 0;
break;
case 10:
state = c == '=' ? state + 1 : 0;
break;
case 11:
if (c == '"') {
state++;
refStart = index + 1;
} else {
state = 0;
}
break;
case 12:
if (c == '"') {
ids[linkIndex] = new String (buffer, refStart, index - refStart);
state = 2;
}
break;
case 13:
if (Character.isWhitespace (c)) {
state = 0;
} else if (c == '='){
state++;
}
break;
case 14:
state = c == '"' ? state + 1 : 0;
break;
case 15:
if (c == '"') state = 2;
break;
default:
state = 0;
break;
}
index++;
}
if (start < length) {
int tmp = parseMnemonics (buffer, start, tagStart, result);
int mnemonic = parseMnemonics (buffer, Math.max (tagStart, linkStart), length, result);
if (mnemonic == -1) mnemonic = tmp;
mnemonics [linkIndex] = mnemonic;
} else {
mnemonics [linkIndex] = -1;
}
if (offsets.length != linkIndex) {
Point [] newOffsets = new Point [linkIndex];
System.arraycopy (offsets, 0, newOffsets, 0, linkIndex);
offsets = newOffsets;
String [] newIDs = new String [linkIndex];
System.arraycopy (ids, 0, newIDs, 0, linkIndex);
ids = newIDs;
int [] newMnemonics = new int [linkIndex + 1];
System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1);
mnemonics = newMnemonics;
}
return result.toString ();
}
int parseMnemonics (char[] buffer, int start, int end, StringBuffer result) {
int mnemonic = -1, index = start;
while (index < end) {
if (buffer [index] == '&') {
if (index + 1 < end && buffer [index + 1] == '&') {
result.append (buffer [index]);
index++;
} else {
mnemonic = result.length();
}
} else {
result.append (buffer [index]);
}
index++;
}
return mnemonic;
}
void releaseWidget () {
super.releaseWidget ();
if (layout != null) layout.dispose ();
layout = null;
if (linkColor != null) linkColor.dispose ();
linkColor = null;
disabledColor = null;
offsets = null;
ids = null;
mnemonics = null;
text = null;
}
/**
* 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);
}
/**
* Sets the receiver's text.
* <p>
* The string can contain both regular text and hyperlinks. A hyperlink
* is delimited by an anchor tag, <A> and </A>. Within an
* anchor, a single HREF attribute is supported. When a hyperlink is
* selected, the text field of the selection event contains either the
* text of the hyperlink or the value of its HREF, if one was specified.
* In the rare case of identical hyperlinks within the same string, the
* HREF attribute can be used to distinguish between them. The string may
* include the mnemonic character and line delimiters. The only delimiter
* the HREF attribute supports is the quotation mark (").
* </p>
* <p>
* Mnemonics are indicated by an '&' that causes the next
* character to be the mnemonic. The receiver can have a
* mnemonic in the text preceding each link. When the user presses a
* key sequence that matches the mnemonic, focus is assigned
* to the link that follows the text. Mnemonics in links and in
* the trailing text are ignored. On most platforms,
* the mnemonic appears underlined but may be emphasised in a
* platform specific manner. The mnemonic indicator character
* '&' can be escaped by doubling it in the string, causing
* a single '&' to be displayed.
* </p>
*
* @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>
*/
public void setText (String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
if (string.equals (text)) return;
text = string;
if (OS.COMCTL32_MAJOR >= 6) {
boolean enabled = OS.IsWindowEnabled (handle);
/*
* Bug in Windows. For some reason, when SetWindowText()
* is used to set the text of a link control to the empty
* string, the old text remains. The fix is to set the
* text to a space instead.
*/
if (string.length () == 0) string = " "; //$NON-NLS-1$
TCHAR buffer = new TCHAR (getCodePage (), string, true);
OS.SetWindowText (handle, buffer);
parse (text);
enableWidget (enabled);
} else {
layout.setText (parse (text));
focusIndex = offsets.length > 0 ? 0 : -1;
selection.x = selection.y = -1;
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
if (offsets.length > 0) {
bits |= OS.WS_TABSTOP;
} else {
bits &= ~OS.WS_TABSTOP;
}
OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
boolean enabled = OS.IsWindowEnabled (handle);
TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
for (int i = 0; i < offsets.length; i++) {
Point point = offsets [i];
layout.setStyle (linkStyle, point.x, point.y);
}
TextStyle mnemonicStyle = new TextStyle (null, null, null);
mnemonicStyle.underline = true;
for (int i = 0; i < mnemonics.length; i++) {
int mnemonic = mnemonics [i];
if (mnemonic != -1) {
layout.setStyle (mnemonicStyle, mnemonic, mnemonic);
}
}
redraw ();
}
}
boolean updateTextDirection(int textDirection) {
if (super.updateTextDirection(textDirection)) {
int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT;
style &= ~SWT.MIRRORED;
style &= ~flags;
style |= textDirection & flags;
updateOrientation ();
checkMirrored ();
return true;
}
return false;
}
int widgetStyle () {
int bits = super.widgetStyle ();
return bits | OS.WS_TABSTOP;
}
TCHAR windowClass () {
return OS.COMCTL32_MAJOR >= 6 ? LinkClass : display.windowClass;
}
long /*int*/ windowProc () {
return LinkProc != 0 ? LinkProc : display.windowProc;
}
LRESULT WM_CHAR (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_CHAR (wParam, lParam);
if (result != null) return result;
if (OS.COMCTL32_MAJOR < 6) {
if (focusIndex == -1) return result;
switch ((int)/*64*/wParam) {
case ' ':
case SWT.CR:
Event event = new Event ();
event.text = ids [focusIndex];
sendSelectionEvent (SWT.Selection, event, true);
break;
case SWT.TAB:
boolean next = OS.GetKeyState (OS.VK_SHIFT) >= 0;
if (next) {
if (focusIndex < offsets.length - 1) {
focusIndex++;
redraw ();
}
} else {
if (focusIndex > 0) {
focusIndex--;
redraw ();
}
}
break;
}
} else {
switch ((int)/*64*/wParam) {
case ' ':
case SWT.CR:
case SWT.TAB:
/*
* NOTE: Call the window proc with WM_KEYDOWN rather than WM_CHAR
* so that the key that was ignored during WM_KEYDOWN is processed.
* This allows the application to cancel an operation that is normally
* performed in WM_KEYDOWN from WM_CHAR.
*/
long /*int*/ code = callWindowProc (handle, OS.WM_KEYDOWN, wParam, lParam);
return new LRESULT (code);
}
}
return result;
}
LRESULT WM_GETDLGCODE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_GETDLGCODE (wParam, lParam);
if (result != null) return result;
int index, count;
long /*int*/ code = 0;
if (OS.COMCTL32_MAJOR >= 6) {
LITEM item = new LITEM ();
item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
item.stateMask = OS.LIS_FOCUSED;
index = 0;
while (OS.SendMessage (handle, OS.LM_GETITEM, 0, item) != 0) {
if ((item.state & OS.LIS_FOCUSED) != 0) {
index = item.iLink;
}
item.iLink++;
}
count = item.iLink;
code = callWindowProc (handle, OS.WM_GETDLGCODE, wParam, lParam);
} else {
index = focusIndex;
count = offsets.length;
}
if (count == 0) {
return new LRESULT (code | OS.DLGC_STATIC);
}
boolean next = OS.GetKeyState (OS.VK_SHIFT) >= 0;
if (next && index < count - 1) {
return new LRESULT (code | OS.DLGC_WANTTAB);
}
if (!next && index > 0) {
return new LRESULT (code | OS.DLGC_WANTTAB);
}
return result;
}
LRESULT WM_GETFONT (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_GETFONT (wParam, lParam);
if (result != null) return result;
long /*int*/ code = callWindowProc (handle, OS.WM_GETFONT, wParam, lParam);
if (code != 0) return new LRESULT (code);
if (font == 0) font = defaultFont ();
return new LRESULT (font);
}
LRESULT WM_KEYDOWN (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_KEYDOWN (wParam, lParam);
if (result != null) return result;
if (OS.COMCTL32_MAJOR >= 6) {
switch ((int)/*64*/wParam) {
case OS.VK_SPACE:
case OS.VK_RETURN:
case OS.VK_TAB:
/*
* Ensure that the window proc does not process VK_SPACE,
* VK_RETURN or VK_TAB so that it can be handled in WM_CHAR.
* This allows the application to cancel an operation that
* is normally performed in WM_KEYDOWN from WM_CHAR.
*/
return LRESULT.ZERO;
}
}
return result;
}
LRESULT WM_KILLFOCUS (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
if (OS.COMCTL32_MAJOR < 6) redraw ();
return result;
}
LRESULT WM_LBUTTONDOWN (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_LBUTTONDOWN (wParam, lParam);
if (result == LRESULT.ZERO) return result;
if (OS.COMCTL32_MAJOR < 6) {
if (focusIndex != -1) setFocus ();
int x = OS.GET_X_LPARAM (lParam);
int y = OS.GET_Y_LPARAM (lParam);
int offset = layout.getOffset (x, y, null);
int oldSelectionX = selection.x;
int oldSelectionY = selection.y;
selection.x = offset;
selection.y = -1;
if (oldSelectionX != -1 && oldSelectionY != -1) {
if (oldSelectionX > oldSelectionY) {
int temp = oldSelectionX;
oldSelectionX = oldSelectionY;
oldSelectionY = temp;
}
Rectangle rect = layout.getBounds (oldSelectionX, oldSelectionY);
redraw (rect.x, rect.y, rect.width, rect.height, false);
}
for (int j = 0; j < offsets.length; j++) {
Rectangle [] rects = getRectangles (j);
for (int i = 0; i < rects.length; i++) {
Rectangle rect = rects [i];
if (rect.contains (x, y)) {
if (j != focusIndex) {
redraw ();
}
focusIndex = mouseDownIndex = j;
return result;
}
}
}
}
return result;
}
LRESULT WM_LBUTTONUP (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_LBUTTONUP (wParam, lParam);
if (result == LRESULT.ZERO) return result;
if (OS.COMCTL32_MAJOR < 6) {
if (mouseDownIndex == -1) return result;
int x = OS.GET_X_LPARAM (lParam);
int y = OS.GET_Y_LPARAM (lParam);
Rectangle [] rects = getRectangles (mouseDownIndex);
for (int i = 0; i < rects.length; i++) {
Rectangle rect = rects [i];
if (rect.contains (x, y)) {
Event event = new Event ();
event.text = ids [mouseDownIndex];
sendSelectionEvent (SWT.Selection, event, true);
break;
}
}
}
mouseDownIndex = -1;
return result;
}
LRESULT WM_NCHITTEST (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_NCHITTEST (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. For WM_NCHITTEST, the Syslink window proc
* returns HTTRANSPARENT when mouse is over plain text. The fix is
* to always return HTCLIENT.
*/
if (OS.COMCTL32_MAJOR >= 6) return new LRESULT (OS.HTCLIENT);
return result;
}
LRESULT WM_MOUSEMOVE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_MOUSEMOVE (wParam, lParam);
if (OS.COMCTL32_MAJOR < 6) {
int x = OS.GET_X_LPARAM (lParam);
int y = OS.GET_Y_LPARAM (lParam);
if (OS.GetKeyState (OS.VK_LBUTTON) < 0) {
int oldSelection = selection.y;
selection.y = layout.getOffset (x, y, null);
if (selection.y != oldSelection) {
int newSelection = selection.y;
if (oldSelection > newSelection) {
int temp = oldSelection;
oldSelection = newSelection;
newSelection = temp;
}
Rectangle rect = layout.getBounds (oldSelection, newSelection);
redraw (rect.x, rect.y, rect.width, rect.height, false);
}
} else {
for (int j = 0; j < offsets.length; j++) {
Rectangle [] rects = getRectangles (j);
for (int i = 0; i < rects.length; i++) {
Rectangle rect = rects [i];
if (rect.contains (x, y)) {
setCursor (display.getSystemCursor (SWT.CURSOR_HAND));
return result;
}
}
}
setCursor (null);
}
}
return result;
}
LRESULT WM_PAINT (long /*int*/ wParam, long /*int*/ lParam) {
if ((state & DISPOSE_SENT) != 0) return LRESULT.ZERO;
if (OS.COMCTL32_MAJOR >= 6) {
return super.WM_PAINT (wParam, lParam);
}
PAINTSTRUCT ps = new PAINTSTRUCT ();
GCData data = new GCData ();
data.ps = ps;
data.hwnd = handle;
GC gc = new_GC (data);
if (gc != null) {
int width = ps.right - ps.left;
int height = ps.bottom - ps.top;
if (width != 0 && height != 0) {
RECT rect = new RECT ();
OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom);
drawWidget (gc, rect);
}
gc.dispose ();
}
return LRESULT.ZERO;
}
LRESULT WM_PRINTCLIENT (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_PRINTCLIENT (wParam, lParam);
if (OS.COMCTL32_MAJOR < 6) {
RECT rect = new RECT ();
OS.GetClientRect (handle, rect);
GCData data = new GCData ();
data.device = display;
data.foreground = getForegroundPixel ();
GC gc = GC.win32_new (wParam, data);
drawWidget (gc, rect);
gc.dispose ();
}
return result;
}
LRESULT WM_SETFOCUS (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_SETFOCUS (wParam, lParam);
if (OS.COMCTL32_MAJOR < 6) redraw ();
return result;
}
LRESULT WM_SETFONT (long /*int*/ wParam, long /*int*/ lParam) {
if (OS.COMCTL32_MAJOR < 6) {
layout.setFont (Font.win32_new (display, wParam));
}
if (lParam != 0) OS.InvalidateRect (handle, null, true);
return super.WM_SETFONT (font = wParam, lParam);
}
LRESULT WM_SIZE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_SIZE (wParam, lParam);
if (OS.COMCTL32_MAJOR < 6) {
RECT rect = new RECT ();
OS.GetClientRect (handle, rect);
layout.setWidth (rect.right > 0 ? rect.right : -1);
redraw ();
}
return result;
}
LRESULT wmColorChild (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.wmColorChild (wParam, lParam);
/*
* Feature in Windows. When a SysLink is disabled, it does
* not gray out the non-link portion of the text. The fix
* is to set the text color to the system gray color.
*/
if (OS.COMCTL32_MAJOR >= 6) {
if (!OS.IsWindowEnabled (handle)) {
OS.SetTextColor (wParam, OS.GetSysColor (OS.COLOR_GRAYTEXT));
if (result == null) {
int backPixel = getBackgroundPixel ();
OS.SetBkColor (wParam, backPixel);
long /*int*/ hBrush = findBrush (backPixel, OS.BS_SOLID);
return new LRESULT (hBrush);
}
}
}
return result;
}
LRESULT wmNotifyChild (NMHDR hdr, long /*int*/ wParam, long /*int*/ lParam) {
if (OS.COMCTL32_MAJOR >= 6) {
switch (hdr.code) {
case OS.NM_RETURN:
case OS.NM_CLICK:
NMLINK item = new NMLINK ();
OS.MoveMemory (item, lParam, NMLINK.sizeof);
Event event = new Event ();
event.text = ids [item.iLink];
sendSelectionEvent (SWT.Selection, event, true);
break;
}
}
return super.wmNotifyChild (hdr, wParam, lParam);
}
}