forked from mozilla/gecko-dev
-
Notifications
You must be signed in to change notification settings - Fork 2
/
nsComboboxControlFrame.h
297 lines (252 loc) · 10.6 KB
/
nsComboboxControlFrame.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
/* -*- 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) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dean Tessman <dean_tessman@hotmail.com>
* Mats Palmgren <mats.palmgren@bredband.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
#ifndef nsComboboxControlFrame_h___
#define nsComboboxControlFrame_h___
#ifdef DEBUG_evaughan
//#define DEBUG_rods
#endif
#ifdef DEBUG_rods
//#define DO_REFLOW_DEBUG
//#define DO_REFLOW_COUNTER
//#define DO_UNCONSTRAINED_CHECK
//#define DO_PIXELS
//#define DO_NEW_REFLOW
#endif
//Mark used to indicate when onchange has been fired for current combobox item
#define NS_SKIP_NOTIFY_INDEX -2
#include "nsBlockFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIComboboxControlFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsISelectControlFrame.h"
#include "nsIRollupListener.h"
#include "nsPresState.h"
#include "nsCSSFrameConstructor.h"
#include "nsIStatefulFrame.h"
#include "nsIScrollableFrame.h"
#include "nsIDOMEventListener.h"
#include "nsThreadUtils.h"
class nsIView;
class nsStyleContext;
class nsIListControlFrame;
class nsComboboxDisplayFrame;
/**
* Child list name indices
* @see #GetAdditionalChildListName()
*/
#define NS_COMBO_LIST_COUNT (NS_BLOCK_LIST_COUNT + 1)
class nsComboboxControlFrame : public nsBlockFrame,
public nsIFormControlFrame,
public nsIComboboxControlFrame,
public nsIAnonymousContentCreator,
public nsISelectControlFrame,
public nsIRollupListener,
public nsIStatefulFrame
{
public:
friend nsIFrame* NS_NewComboboxControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, PRUint32 aFlags);
friend class nsComboboxDisplayFrame;
nsComboboxControlFrame(nsStyleContext* aContext);
~nsComboboxControlFrame();
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
// nsIAnonymousContentCreator
virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements);
virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
PRUint32 aFilter);
virtual nsIFrame* CreateFrameFor(nsIContent* aContent);
#ifdef ACCESSIBILITY
virtual already_AddRefed<nsAccessible> CreateAccessible();
#endif
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
NS_IMETHOD Reflow(nsPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
void PaintFocus(nsRenderingContext& aRenderingContext, nsPoint aPt);
// XXXbz this is only needed to prevent the quirk percent height stuff from
// leaking out of the combobox. We may be able to get rid of this as more
// things move to IsFrameOfType.
virtual nsIAtom* GetType() const;
virtual PRBool IsFrameOfType(PRUint32 aFlags) const
{
return nsBlockFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
virtual nsIScrollableFrame* GetScrollTargetFrame() {
return do_QueryFrame(mDropdownFrame);
}
#ifdef NS_DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
virtual void DestroyFrom(nsIFrame* aDestructRoot);
virtual nsFrameList GetChildList(nsIAtom* aListName) const;
NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
nsFrameList& aChildList);
virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const;
virtual nsIFrame* GetContentInsertionFrame();
// nsIFormControlFrame
virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
/**
* Inform the control that it got (or lost) focus.
* If it lost focus, the dropdown menu will be rolled up if needed,
* and FireOnChange() will be called.
* @param aOn PR_TRUE if got focus, PR_FALSE if lost focus.
* @param aRepaint if PR_TRUE then force repaint (NOTE: we always force repaint currently)
* @note This method might destroy |this|.
*/
virtual void SetFocus(PRBool aOn, PRBool aRepaint);
//nsIComboboxControlFrame
virtual PRBool IsDroppedDown() { return mDroppedDown; }
/**
* @note This method might destroy |this|.
*/
virtual void ShowDropDown(PRBool aDoDropDown);
virtual nsIFrame* GetDropDown();
virtual void SetDropDown(nsIFrame* aDropDownFrame);
/**
* @note This method might destroy |this|.
*/
virtual void RollupFromList();
virtual void AbsolutelyPositionDropDown();
virtual PRInt32 GetIndexOfDisplayArea();
/**
* @note This method might destroy |this|.
*/
NS_IMETHOD RedisplaySelectedText();
virtual PRInt32 UpdateRecentIndex(PRInt32 aIndex);
virtual void OnContentReset();
// nsISelectControlFrame
NS_IMETHOD AddOption(PRInt32 index);
NS_IMETHOD RemoveOption(PRInt32 index);
NS_IMETHOD DoneAddingChildren(PRBool aIsDone);
NS_IMETHOD OnOptionSelected(PRInt32 aIndex, PRBool aSelected);
NS_IMETHOD OnSetSelectedIndex(PRInt32 aOldIndex, PRInt32 aNewIndex);
//nsIRollupListener
/**
* Hide the dropdown menu and stop capturing mouse events.
* @note This method might destroy |this|.
*/
NS_IMETHOD Rollup(PRUint32 aCount, nsIContent** aLastRolledUp);
/**
* A combobox should roll up if a mousewheel event happens outside of
* the popup area.
*/
NS_IMETHOD ShouldRollupOnMouseWheelEvent(PRBool *aShouldRollup)
{ *aShouldRollup = PR_TRUE; return NS_OK;}
/**
* A combobox should not roll up if activated by a mouse activate message
* (eg. X-mouse).
*/
NS_IMETHOD ShouldRollupOnMouseActivate(PRBool *aShouldRollup)
{ *aShouldRollup = PR_FALSE; return NS_OK;}
//nsIStatefulFrame
NS_IMETHOD SaveState(SpecialStateID aStateID, nsPresState** aState);
NS_IMETHOD RestoreState(nsPresState* aState);
static PRBool ToolkitHasNativePopup();
protected:
// Utilities
nsresult ReflowDropdown(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState);
// Helper for GetMinWidth/GetPrefWidth
nscoord GetIntrinsicWidth(nsRenderingContext* aRenderingContext,
nsLayoutUtils::IntrinsicWidthType aType);
protected:
class RedisplayTextEvent;
friend class RedisplayTextEvent;
class RedisplayTextEvent : public nsRunnable {
public:
NS_DECL_NSIRUNNABLE
RedisplayTextEvent(nsComboboxControlFrame *c) : mControlFrame(c) {}
void Revoke() { mControlFrame = nsnull; }
private:
nsComboboxControlFrame *mControlFrame;
};
/**
* Show or hide the dropdown list.
* @note This method might destroy |this|.
*/
void ShowPopup(PRBool aShowPopup);
/**
* Show or hide the dropdown list.
* @param aShowList PR_TRUE to show, PR_FALSE to hide the dropdown.
* @note This method might destroy |this|.
* @return PR_FALSE if this frame is destroyed, PR_TRUE if still alive.
*/
PRBool ShowList(PRBool aShowList);
void CheckFireOnChange();
void FireValueChangeEvent();
nsresult RedisplayText(PRInt32 aIndex);
void HandleRedisplayTextEvent();
void ActuallyDisplayText(PRBool aNotify);
nsFrameList mPopupFrames; // additional named child list
nsCOMPtr<nsIContent> mDisplayContent; // Anonymous content used to display the current selection
nsCOMPtr<nsIContent> mButtonContent; // Anonymous content for the button
nsIFrame* mDisplayFrame; // frame to display selection
nsIFrame* mButtonFrame; // button frame
nsIFrame* mDropdownFrame; // dropdown list frame
nsIListControlFrame * mListControlFrame; // ListControl Interface for the dropdown frame
// The width of our display area. Used by that frame's reflow to
// size to the full width except the drop-marker.
nscoord mDisplayWidth;
PRPackedBool mDroppedDown; // Current state of the dropdown list, PR_TRUE is dropped down
PRPackedBool mInRedisplayText;
nsRevocableEventPtr<RedisplayTextEvent> mRedisplayTextEvent;
PRInt32 mRecentSelectedIndex;
PRInt32 mDisplayedIndex;
nsString mDisplayedOptionText;
// make someone to listen to the button. If its programmatically pressed by someone like Accessibility
// then open or close the combo box.
nsCOMPtr<nsIDOMEventListener> mButtonListener;
// static class data member for Bug 32920
// only one control can be focused at a time
static nsComboboxControlFrame * mFocused;
#ifdef DO_REFLOW_COUNTER
PRInt32 mReflowId;
#endif
};
#endif