Use native Cocoa tooltips instead of Mozilla's ToolTip class.

third_party/mozilla/include/ToolTip.mm

Index: third_party/mozilla/include/ToolTip.mm
===================================================================
--- third_party/mozilla/include/ToolTip.mm	(revision 19944)
+++ third_party/mozilla/include/ToolTip.mm	(working copy)
@@ -1,211 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2002
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Richard Schreyer
- *   Josh Aas <josh@mozilla.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-#import "ToolTip.h"
-#import "NSScreen+Utils.h"
-
-@interface ToolTip (ToolTipPrivateMethods)
-
-- (void)parentWindowDidResignKey:(NSNotification*)inNotification;
-
-@end
-
-const float kBorderPadding = 2.0;
-const float kMaxTextFieldWidth = 250.0;
-const float kVOffset = 20.0;
-
-@implementation ToolTip
-
-- (id)init
-{
-  if ((self = [super init]))
-  {
-    // the ref from -alloc is balanced by the -release in dealloc
-    mTooltipWindow = [[NSWindow alloc] initWithContentRect:NSMakeRect(0.0, 0.0, kMaxTextFieldWidth, 0.0)
-                                         styleMask:NSBorderlessWindowMask
-                                           backing:NSBackingStoreBuffered
-                                             defer:YES];
-
-    // we don't want closing the window to release it, because we aren't always in control
-    // of the close (AppKit may do it on quit).
-    [mTooltipWindow setReleasedWhenClosed:NO];
-
-    // Create a textfield as the content of our new window.
-    // Field occupies all but the top 2 and bottom 2 pixels of the panel (bug 149635)
-    mTextView = [[NSTextView alloc] initWithFrame:NSMakeRect(0.0, kBorderPadding, kMaxTextFieldWidth, 0.0)];
-    [[mTooltipWindow contentView] addSubview:mTextView];
-    [mTextView release]; // window holds ref
-
-    // set up the panel
-    [mTooltipWindow setHasShadow:YES];
-    [mTooltipWindow setBackgroundColor:[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:0.81 alpha:1.0]];
-
-
-    // set up the text view
-    [mTextView setDrawsBackground:NO];
-    [mTextView setEditable:NO];
-    [mTextView setSelectable:NO];
-    [mTextView setFont:[NSFont toolTipsFontOfSize:[NSFont smallSystemFontSize]]];
-    [mTextView setMinSize:NSMakeSize(0.0, 0.0)];
-    [mTextView setHorizontallyResizable:YES];
-    [mTextView setVerticallyResizable:YES];
-  }
-  return self;
-}
-
-- (void)dealloc
-{
-  [self closeToolTip];
-
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-
-  [mTooltipWindow close];   // we set the window not to release on -close
-  [mTooltipWindow release];
-
-  [super dealloc];
-}
-
-- (void)showToolTipAtPoint:(NSPoint)windowPoint
-                withString:(NSString*)string
-                overWindow:(NSWindow*)inWindow
-{
-  if ([string length] == 0)
-    return;
-
-  NSPoint point = [inWindow convertBaseToScreen:windowPoint];
-  NSScreen* screen = [NSScreen screenForPoint:point];
-  if (!screen)
-    screen = [NSScreen mainScreen];
-
-  if (!screen)
-    return;
-
-  // register for window losing key status notifications, so we can hide the tooltip
-  // on window deactivation
-  [[NSNotificationCenter defaultCenter] addObserver:self
-                                           selector:@selector(parentWindowDidResignKey:)
-                                               name:NSWindowDidResignKeyNotification
-                                             object:inWindow];
-
-  NSRect screenFrame = [screen visibleFrame];
-  NSSize screenSize = screenFrame.size;
-
-  // for some reason, text views suffer from hysteresis; the answer you get this time
-  // depends on what you had in there before. so clear state first.
-  [mTextView setString:@""];
-  [mTextView setFrame:NSMakeRect(0, kBorderPadding, 0, 0)];
-
-  // -sizeToFit sucks. For some reason it likes to wrap short words, so
-  // we measure the text by hand and set that as the min width.
-  NSSize stringSize = [string sizeWithAttributes:[NSDictionary dictionaryWithObject:[NSFont toolTipsFontOfSize:[NSFont smallSystemFontSize]] forKey:NSFontAttributeName]];
-  float textViewWidth = ceil(stringSize.width);
-  if (textViewWidth > kMaxTextFieldWidth)
-    textViewWidth = kMaxTextFieldWidth;
-
-  textViewWidth += 2.0 * 5.0;   // magic numbers required to make the text not wrap. No, this isn't -textContainerInset.
-
-  // set up the text view
-  [mTextView setMaxSize:NSMakeSize(kMaxTextFieldWidth, screenSize.height - 2 * kBorderPadding)]; // do this here since we know screen size
-  [mTextView setString:string]; // do this after setting max size, before setting constrained frame size,
-                                // reset to max width - it will not grow horizontally when resizing, only vertically
-  [mTextView setConstrainedFrameSize:NSMakeSize(kMaxTextFieldWidth, 0.0)];
-  // to avoid wrapping when we don't want it, set the min width
-  [mTextView setMinSize:NSMakeSize(textViewWidth, 0.0)];
-
-  // finally, do the buggy sizeToFit
-  [mTextView sizeToFit];
-  // The first time we sizeToFit a text field on Leopard, it decides that
-  // 0 would be a good height. We disagree, so make it try again.
-  NSRect textViewFrame = [mTextView frame];
-  if (textViewFrame.size.height < 1.0) {
-    [mTextView sizeToFit];
-    textViewFrame = [mTextView frame];
-  }
-
-  // set the origin back where its supposed to be
-  [mTextView setFrameOrigin:NSMakePoint(0, kBorderPadding)];
-
-  // size the panel correctly, taking border into account
-  NSSize textSize = textViewFrame.size;
-  textSize.height += kBorderPadding + kBorderPadding;
-  [mTooltipWindow setContentSize:textSize];
-
-  // We try to put the top left point right below the cursor. If that doesn't fit
-  // on screen, put the bottom left point above the cursor.
-  if (point.y - kVOffset - textSize.height > NSMinY(screenFrame)) {
-    point.y -= kVOffset;
-    [mTooltipWindow setFrameTopLeftPoint:point];
-  }
-  else {
-    point.y += kVOffset / 2.5;
-    [mTooltipWindow setFrameOrigin:point];
-  }
-
-  // if it doesn't fit on screen horizontally, adjust so that it does
-  float amountOffScreenX = NSMaxX(screenFrame) - NSMaxX([mTooltipWindow frame]);
-  if (amountOffScreenX < 0) {
-    NSRect movedFrame = [mTooltipWindow frame];
-    movedFrame.origin.x += amountOffScreenX;
-    [mTooltipWindow setFrame:movedFrame display:NO];
-  }
-
-  // add as a child window
-  [inWindow addChildWindow:mTooltipWindow ordered:NSWindowAbove];
-  // show the panel
-  [mTooltipWindow orderFront:nil];
-}
-
-- (void)closeToolTip
-{
-  // we can get -closeToolTip even if we didn't show it
-  if ([mTooltipWindow isVisible])
-  {
-    [[mTooltipWindow parentWindow] removeChildWindow:mTooltipWindow];
-    [mTooltipWindow orderOut:nil];
-  }
-
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-}
-
-- (void)parentWindowDidResignKey:(NSNotification*)inNotification
-{
-  [self closeToolTip];
-}
-
-@end