|
1 /* |
|
2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Preview popup controller. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #ifndef AKNPREVIEWPOPUPCONTROLLER_H |
|
20 #define AKNPREVIEWPOPUPCONTROLLER_H |
|
21 |
|
22 // INCLUDES |
|
23 #include <e32base.h> |
|
24 #include <e32std.h> |
|
25 #include <coecntrl.h> |
|
26 #include <AknPreviewPopUpObserver.h> |
|
27 |
|
28 // FORWARD DECLARATIONS |
|
29 class MAknPreviewPopUpContentProvider; |
|
30 class CAknPreviewPopUp; |
|
31 |
|
32 // CLASS DECLARATION |
|
33 |
|
34 /** |
|
35 * Class for controlling the preview popup component. |
|
36 * Preview popup is a popup that can be used to show some extra information |
|
37 * about e.g. a highlighted list item. It cannot get keyboard focus. Popup is |
|
38 * shown after a default timeout of one second and hidden on key press or when |
|
39 * it has been visible for ten seconds. These timeouts can be changed via this |
|
40 * API. |
|
41 * |
|
42 * Preview popup itself provides only timing services and an empty popup window |
|
43 * whose frames and background are drawn with the current skin. It is client |
|
44 * application's responsibility to provide the actual content. This can be any |
|
45 * object derived from CCoeControl. When the popup is shown it asks content's |
|
46 * size using CCoeControl::MinimumSize and sizes itself so that the whole |
|
47 * content fits into the popup. Content can also be created asynchronously if |
|
48 * it takes considerable amount of time. |
|
49 * |
|
50 * @lib avkon.lib |
|
51 * @since S60 3.2 |
|
52 */ |
|
53 NONSHARABLE_CLASS( CAknPreviewPopUpController ) : public CTimer |
|
54 { |
|
55 public: // Type definitions |
|
56 enum TAknPreviewStyle |
|
57 { |
|
58 ELayoutDefault = 0x0001, // default graphics are used |
|
59 ELayoutSubMenu = 0x0002, // submenu graphics are used |
|
60 EPermanentMode = 0x0004, // popup stays visible infinitely |
|
61 EFixedMode = 0x0008, // fixed position and size are used |
|
62 EExcludeFrames = 0x0010, // frames and heading area are excluded in fixed mode |
|
63 EAutoMirror = 0x0020, // opening direction is automatically mirrored in left-to-right layouts |
|
64 EDontClose = 0x0040, // popup not closed when pointer up received outside popup |
|
65 EConsumeKeys = 0x0080 // popup consumes key events |
|
66 }; |
|
67 |
|
68 enum TAknPreviewPopUpContentSize |
|
69 { |
|
70 ESmall, |
|
71 ELarge |
|
72 }; |
|
73 |
|
74 public: // Constructors and destructor |
|
75 |
|
76 /** |
|
77 * Two-phased constructor. This version should be used if the content |
|
78 * is created asynchronously. |
|
79 * @param aContent Reference to the content of the preview popup. |
|
80 * @param aContentProvider Reference to the content provider of the popup. |
|
81 */ |
|
82 IMPORT_C static CAknPreviewPopUpController* NewL( CCoeControl& aContent, |
|
83 MAknPreviewPopUpContentProvider& aContentProvider ); |
|
84 |
|
85 /** |
|
86 * Two-phased constructor. This version should be used if the content is |
|
87 * created synchronously i.e. it's ready when the popup is about to be |
|
88 * shown. This is also the normal use case. |
|
89 * @param aContent Reference to the content of the preview popup. |
|
90 */ |
|
91 IMPORT_C static CAknPreviewPopUpController* NewL( CCoeControl& aContent ); |
|
92 |
|
93 /** |
|
94 * Two-phased constructor. This version should be used if the content |
|
95 * is created asynchronously. |
|
96 * @param aContent Reference to the content of the preview popup. |
|
97 * @param aContentProvider Reference to the content provider of the popup. |
|
98 * @param aStyle Defines the used layout and behavior flags. |
|
99 */ |
|
100 IMPORT_C static CAknPreviewPopUpController* NewL( CCoeControl& aContent, |
|
101 MAknPreviewPopUpContentProvider& aContentProvider, |
|
102 const TInt aStyle ); |
|
103 |
|
104 /** |
|
105 * Two-phased constructor. This version should be used if the content is |
|
106 * created synchronously i.e. it's ready when the popup is about to be |
|
107 * shown. This is also the normal use case. |
|
108 * @param aContent Reference to the content of the preview popup. |
|
109 * @param aStyle Defines the used layout and behavior flags. |
|
110 */ |
|
111 IMPORT_C static CAknPreviewPopUpController* NewL( CCoeControl& aContent, |
|
112 const TInt aStyle ); |
|
113 |
|
114 /** |
|
115 * Destructor. |
|
116 */ |
|
117 ~CAknPreviewPopUpController(); |
|
118 |
|
119 public: // New functions |
|
120 |
|
121 /** |
|
122 * This static function can be used to query the logical size of the |
|
123 * screen when drawing the content of the popup. When ELarge is returned |
|
124 * more detailed information (e.g. a picture) can be shown whereas ESmall |
|
125 * suggests that the available screen area is more limited and simpler |
|
126 * content should be used. |
|
127 * @return Logical size of the screen. |
|
128 */ |
|
129 IMPORT_C static TAknPreviewPopUpContentSize ContentSizeInLayout(); |
|
130 |
|
131 /** |
|
132 * Sets the delay used before showing the preview popup. The default |
|
133 * delay is one second. |
|
134 * @param aDelay Delay in microseconds. |
|
135 */ |
|
136 IMPORT_C void SetPopUpShowDelay( const TTimeIntervalMicroSeconds32& aDelay ); |
|
137 |
|
138 /** |
|
139 * Sets the delay used before hiding the preview popup. The default |
|
140 * delay is three seconds. |
|
141 * @param aDelay Delay in microseconds. |
|
142 */ |
|
143 IMPORT_C void SetPopUpHideDelay( const TTimeIntervalMicroSeconds32& aDelay ); |
|
144 |
|
145 /** |
|
146 * Sets the preview popup visible after specified delay. If the popup |
|
147 * is already visible it is hidden immediately and shown again after the |
|
148 * showing delay. Popup is automatically hidden after its hiding delay |
|
149 * unless the delay is zero in which case the popup is shown infinitely. |
|
150 */ |
|
151 IMPORT_C void ShowPopUp(); |
|
152 |
|
153 /** |
|
154 * Hides the popup immediately. |
|
155 */ |
|
156 IMPORT_C void HidePopUp(); |
|
157 |
|
158 /** |
|
159 * If application wishes to build preview popup's content asynchronously |
|
160 * the content class should be derived from MAknPreviewPopUpContentProvider |
|
161 * in addition to CCoeControl. This function must be called by the content |
|
162 * object when it has finished its asynchronous building operation. |
|
163 */ |
|
164 IMPORT_C void ContentReady(); |
|
165 |
|
166 /** |
|
167 * Sets the position of preview popup. Popup's size is determined by the |
|
168 * size of its content. The popup is placed left and down from the given |
|
169 * point. If fixed mode is used then this function has no effect. |
|
170 * @param aPoint Popup's position. |
|
171 */ |
|
172 IMPORT_C void SetPosition( const TPoint& aPoint ); |
|
173 |
|
174 /** |
|
175 * Sets the position of the preview popup so that it is aligned with the |
|
176 * given rectangle as specified in the LAF data. This is intented to be |
|
177 * used in conjunction with lists and grids if the application wishes to |
|
178 * implement a popup that follows lists/grids item highlight. |
|
179 * @param aHighlightRect Screen-relative rectangle used to calculate |
|
180 * popup's position. |
|
181 */ |
|
182 IMPORT_C void SetPositionByHighlight( const TRect& aHighlightRect ); |
|
183 |
|
184 /** |
|
185 * Adds the observer to the list of observers. Observers in the list are |
|
186 * notified of events in preview popup. |
|
187 * @param aObserver Observer. |
|
188 */ |
|
189 IMPORT_C void AddObserverL( const MAknPreviewPopUpObserver& aObserver ); |
|
190 |
|
191 /** |
|
192 * Removes the given observer from the observer list. |
|
193 * @param aObserver Observer. |
|
194 */ |
|
195 IMPORT_C void RemoveObserver( const MAknPreviewPopUpObserver& aObserver ); |
|
196 |
|
197 /** |
|
198 * Updates popup's size to reflect a change in content's size. |
|
199 * Should be called if the size of the content is changed dynamically. |
|
200 */ |
|
201 IMPORT_C void UpdateContentSize(); |
|
202 |
|
203 /** |
|
204 * Returns the popup's size. |
|
205 */ |
|
206 IMPORT_C TSize Size() const; |
|
207 |
|
208 /** |
|
209 * Sets optional heading text. If heading text is already set the |
|
210 * current text is replaced. When set also a closing icon is shown if |
|
211 * the currently active layout supports stylus. |
|
212 * @param aText Heading text. |
|
213 */ |
|
214 IMPORT_C void SetHeadingTextL( const TDesC& aText ); |
|
215 |
|
216 /** |
|
217 * Notifies observers about the specified preview popup event. |
|
218 * @param aEvent Preview popup event. |
|
219 */ |
|
220 void NotifyObservers( MAknPreviewPopUpObserver::TPreviewPopUpEvent aEvent ); |
|
221 |
|
222 /** |
|
223 * Resets the popup timeout. |
|
224 */ |
|
225 IMPORT_C void ResetTimer(); |
|
226 |
|
227 protected: // Functions from base classes |
|
228 |
|
229 /** |
|
230 * From CTimer. Cancels an outstanding asynchronous request. |
|
231 */ |
|
232 void DoCancel(); |
|
233 |
|
234 /** |
|
235 * From CActive. Handles active object's request completion event. |
|
236 */ |
|
237 void RunL(); |
|
238 |
|
239 /** |
|
240 * From CActive. Handles leaves that occur while RunL is executed. |
|
241 * @param aError Leave code. |
|
242 * @return Always KErrNone. |
|
243 */ |
|
244 TInt RunError( TInt aError ); |
|
245 |
|
246 private: // Constructors |
|
247 |
|
248 /** |
|
249 * C++ default constructor. |
|
250 * @param aContentProvider Pointer to the content provider of the popup. |
|
251 */ |
|
252 CAknPreviewPopUpController( |
|
253 MAknPreviewPopUpContentProvider* aContentProvider ); |
|
254 |
|
255 /** |
|
256 * Symbian 2nd phase constructor. |
|
257 * @param aContent Reference to the content of the preview popup. |
|
258 * @param aStyle Defines the layout and style of the preview popup. |
|
259 */ |
|
260 void ConstructL( CCoeControl& aContent, |
|
261 const TInt aStyle ); |
|
262 |
|
263 private: // Data |
|
264 |
|
265 enum TPreviewState |
|
266 { |
|
267 EShowing, |
|
268 EHiding, |
|
269 EBuildingContent |
|
270 }; |
|
271 |
|
272 // state of preview popup controller |
|
273 TPreviewState iState; |
|
274 |
|
275 // interface for asynchronous content building |
|
276 MAknPreviewPopUpContentProvider* iContentProvider; // Not owned |
|
277 |
|
278 // pointer to preview popup. |
|
279 CAknPreviewPopUp* iPopUp; |
|
280 |
|
281 // delay used before showing the preview popup |
|
282 TTimeIntervalMicroSeconds32 iPopUpShowDelay; |
|
283 |
|
284 // delay used before hiding the preview popup |
|
285 TTimeIntervalMicroSeconds32 iPopUpHideDelay; |
|
286 |
|
287 // array containing pointers to registered observers |
|
288 RPointerArray<MAknPreviewPopUpObserver> iObservers; |
|
289 |
|
290 // True if timer is being resetted and the DoCancel should not hide the popup |
|
291 TBool iResetting; |
|
292 }; |
|
293 |
|
294 #endif // AKNPREVIEWPOPUPCONTROLLER_H |
|
295 |
|
296 // End of File |