summaryrefslogtreecommitdiff
path: root/indra/llui/llfolderview.h
blob: d4a1434c73fa02203130057bbd039284e69d171e (plain)
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
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
/** 
 * @file llfolderview.h
 * @brief Definition of the folder view collection of classes.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

/**
 *
 * The folder view collection of classes provides an interface for
 * making a 'folder view' similar to the way the a single pane file
 * folder interface works.
 *
 */

#ifndef LL_LLFOLDERVIEW_H
#define LL_LLFOLDERVIEW_H

#include "llfolderviewitem.h"	// because LLFolderView is-a LLFolderViewFolder

#include "lluictrl.h"
#include "v4color.h"
#include "stdenums.h"
#include "lldepthstack.h"
#include "lleditmenuhandler.h"
#include "llfontgl.h"
#include "llscrollcontainer.h"

class LLFolderViewModelInterface;
class LLFolderViewFolder;
class LLFolderViewItem;
class LLFolderViewFilter;
class LLPanel;
class LLLineEditor;
class LLMenuGL;
class LLUICtrl;
class LLTextBox;

/**
 * Class LLFolderViewScrollContainer
 *
 * A scroll container which provides the information about the height
 * of currently displayed folder view contents.
 * Used for updating vertical scroll bar visibility in inventory panel.
 * See LLScrollContainer::calcVisibleSize().
 */
class LLFolderViewScrollContainer : public LLScrollContainer
{
public:
	/*virtual*/ ~LLFolderViewScrollContainer() {};
	/*virtual*/ const LLRect getScrolledViewRect() const;

protected:
	LLFolderViewScrollContainer(const LLScrollContainer::Params& p);
	friend class LLUICtrlFactory;
};

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLFolderView
//
// The LLFolderView represents the root level folder view object. 
// It manages the screen region of the folder view.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class LLFolderView : public LLFolderViewFolder, public LLEditMenuHandler
{
public:
	struct Params : public LLInitParam::Block<Params, LLFolderViewFolder::Params>
	{
		Mandatory<LLPanel*>	    parent_panel;
		Optional<std::string>   title;
		Optional<bool>			use_label_suffix,
								allow_multiselect,
								show_empty_message,
								use_ellipses,
								show_item_link_overlays;
		Mandatory<LLFolderViewModelInterface*>	view_model;
        Mandatory<std::string>   options_menu;


		Params();
	};

	friend class LLFolderViewScrollContainer;

	LLFolderView(const Params&);
	virtual ~LLFolderView( void );

	virtual BOOL canFocusChildren() const;

	virtual const LLFolderView*	getRoot() const { return this; }
	virtual LLFolderView*	getRoot() { return this; }

	LLFolderViewModelInterface* getFolderViewModel() { return mViewModel; }
	const LLFolderViewModelInterface* getFolderViewModel() const { return mViewModel; }

	typedef boost::signals2::signal<void (const std::deque<LLFolderViewItem*>& items, BOOL user_action)> signal_t;
	void setSelectCallback(const signal_t::slot_type& cb) { mSelectSignal.connect(cb); }
	void setReshapeCallback(const signal_t::slot_type& cb) { mReshapeSignal.connect(cb); }
	
	bool getAllowMultiSelect() { return mAllowMultiSelect; }

	// Close all folders in the view
	void closeAllFolders();
	void openTopLevelFolders();

	virtual void addFolder( LLFolderViewFolder* folder);

	// Find width and height of this object and its children. Also
	// makes sure that this view and its children are the right size.
	virtual S32 arrange( S32* width, S32* height );
	virtual S32 getItemHeight();

	void arrangeAll() { mArrangeGeneration++; }
	S32 getArrangeGeneration() { return mArrangeGeneration; }

	// applies filters to control visibility of items
	virtual void filter( LLFolderViewFilter& filter);

	// Get the last selected item
	virtual LLFolderViewItem* getCurSelectedItem( void );

	// Record the selected item and pass it down the hierarchy.
	virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem,
		BOOL take_keyboard_focus = TRUE);

	// This method is used to toggle the selection of an item. Walks
	// children, and keeps track of selected objects.
	virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected);

	virtual std::set<LLFolderViewItem*> getSelectionList() const;

	// Make sure if ancestor is selected, descendants are not
	void sanitizeSelection();
	virtual void clearSelection();
	void addToSelectionList(LLFolderViewItem* item);
	void removeFromSelectionList(LLFolderViewItem* item);

	bool startDrag();
	void setDragAndDropThisFrame() { mDragAndDropThisFrame = TRUE; }
	void setDraggingOverItem(LLFolderViewItem* item) { mDraggingOverItem = item; }
	LLFolderViewItem* getDraggingOverItem() { return mDraggingOverItem; }

	// Deletion functionality
 	void removeSelectedItems();

	// Open the selected item
	void openSelectedItems( void );
	void propertiesSelectedItems( void );

	void autoOpenItem(LLFolderViewFolder* item);
	void closeAutoOpenedFolders();
	BOOL autoOpenTest(LLFolderViewFolder* item);
	BOOL isOpen() const { return TRUE; } // root folder always open

	// Copy & paste
	virtual BOOL	canCopy() const;
	virtual void	copy();

	virtual BOOL	canCut() const;
	virtual void	cut();

	virtual BOOL	canPaste() const;
	virtual void	paste();

	virtual BOOL	canDoDelete() const;
	virtual void	doDelete();

	LLFolderViewItem* getNextUnselectedItem();

	// Public rename functionality - can only start the process
	void startRenamingSelectedItem( void );

	// LLView functionality
	///*virtual*/ BOOL handleKey( KEY key, MASK mask, BOOL called_from_parent );
	/*virtual*/ BOOL handleKeyHere( KEY key, MASK mask );
	/*virtual*/ BOOL handleUnicodeCharHere(llwchar uni_char);
	/*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
	/*virtual*/ BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
	/*virtual*/ BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
	/*virtual*/ BOOL handleHover( S32 x, S32 y, MASK mask );
	/*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
								   EDragAndDropType cargo_type,
								   void* cargo_data,
								   EAcceptance* accept,
								   std::string& tooltip_msg);
	/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
	/*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask) { setShowSelectionContext(FALSE); }
	virtual void draw();
	virtual void deleteAllChildren();

	void scrollToShowSelection();
	void scrollToShowItem(LLFolderViewItem* item, const LLRect& constraint_rect);
	void setScrollContainer( LLScrollContainer* parent ) { mScrollContainer = parent; }
	LLRect getVisibleRect();

	BOOL search(LLFolderViewItem* first_item, const std::string &search_string, BOOL backward);
	void setShowSelectionContext(BOOL show) { mShowSelectionContext = show; }
	BOOL getShowSelectionContext();
	void setShowSingleSelection(BOOL show);
	BOOL getShowSingleSelection() { return mShowSingleSelection; }
	F32  getSelectionFadeElapsedTime() { return mMultiSelectionFadeTimer.getElapsedTimeF32(); }
	bool getUseEllipses() { return mUseEllipses; }
	S32 getSelectedCount() { return (S32)mSelectedItems.size(); }

	void	update();						// needs to be called periodically (e.g. once per frame)

	BOOL needsAutoSelect() { return mNeedsAutoSelect && !mAutoSelectOverride; }
	BOOL needsAutoRename() { return mNeedsAutoRename; }
	void setNeedsAutoRename(BOOL val) { mNeedsAutoRename = val; }
	void setPinningSelectedItem(BOOL val) { mPinningSelectedItem = val; }
	void setAutoSelectOverride(BOOL val) { mAutoSelectOverride = val; }

	bool showItemLinkOverlays() { return mShowItemLinkOverlays; }

	void setCallbackRegistrar(LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* registrar) { mCallbackRegistrar = registrar; }

	LLPanel* getParentPanel() { return mParentPanel; }
	// DEBUG only
	void dumpSelectionInformation();

	virtual S32	notify(const LLSD& info) ;
	
	bool useLabelSuffix() { return mUseLabelSuffix; }
	void updateMenu();

private:
	void updateMenuOptions(LLMenuGL* menu);
	void updateRenamerPosition();

protected:
	LLScrollContainer* mScrollContainer;  // NULL if this is not a child of a scroll container.

	void commitRename( const LLSD& data );
	void onRenamerLost();

	void finishRenamingItem( void );
	void closeRenamer( void );

	bool selectFirstItem();
	bool selectLastItem();
	
	BOOL addNoOptions(LLMenuGL* menu) const;


protected:
	LLHandle<LLView>					mPopupMenuHandle;
	
	typedef std::deque<LLFolderViewItem*> selected_items_t;
	selected_items_t				mSelectedItems;
	BOOL							mKeyboardSelection;
	BOOL							mAllowMultiSelect;
	BOOL							mShowEmptyMessage;
	BOOL							mShowFolderHierarchy;

	// Renaming variables and methods
	LLFolderViewItem*				mRenameItem;  // The item currently being renamed
	LLLineEditor*					mRenamer;

	BOOL							mNeedsScroll;
	BOOL							mPinningSelectedItem;
	LLRect							mScrollConstraintRect;
	BOOL							mNeedsAutoSelect;
	BOOL							mAutoSelectOverride;
	BOOL							mNeedsAutoRename;
	bool							mUseLabelSuffix;
	bool							mShowItemLinkOverlays;
	
	LLDepthStack<LLFolderViewFolder>	mAutoOpenItems;
	LLFolderViewFolder*				mAutoOpenCandidate;
	LLFrameTimer					mAutoOpenTimer;
	LLFrameTimer					mSearchTimer;
	std::string						mSearchString;
	BOOL							mShowSelectionContext;
	BOOL							mShowSingleSelection;
	LLFrameTimer					mMultiSelectionFadeTimer;
	S32								mArrangeGeneration;

	signal_t						mSelectSignal;
	signal_t						mReshapeSignal;
	S32								mSignalSelectCallback;
	S32								mMinWidth;
	BOOL							mDragAndDropThisFrame;
	
	LLPanel*						mParentPanel;
	
	LLFolderViewModelInterface*		mViewModel;

	/**
	 * Is used to determine if we need to cut text In LLFolderViewItem to avoid horizontal scroll.
	 * NOTE: For now it's used only to cut LLFolderViewItem::mLabel text for Landmarks in Places Panel.
	 */
	bool							mUseEllipses; // See EXT-719

	/**
	 * Contains item under mouse pointer while dragging
	 */
	LLFolderViewItem*				mDraggingOverItem; // See EXT-719

	LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* mCallbackRegistrar;
	
public:
	static F32 sAutoOpenTime;
	LLTextBox*						mStatusTextBox;

};


//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLFolderViewFunctor
//
// Simple abstract base class for applying a functor to folders and
// items in a folder view hierarchy. This is suboptimal for algorithms
// that only work folders or only work on items, but I'll worry about
// that later when it's determined to be too slow.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLFolderViewFunctor
{
public:
	virtual ~LLFolderViewFunctor() {}
	virtual void doFolder(LLFolderViewFolder* folder) = 0;
	virtual void doItem(LLFolderViewItem* item) = 0;
};

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLSelectFirstFilteredItem
//
// This will select the first *item* found in the hierarchy. If no item can be
// selected, the first matching folder will.
// Since doFolder() is done first but we prioritize item selection, we let the 
// first filtered folder set the selection and raise a folder flag.
// The selection might be overridden by the first filtered item in doItem()  
// which checks an item flag. Since doFolder() checks the item flag too, the first
// item will still be selected if items were to be done first and folders second.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLSelectFirstFilteredItem : public LLFolderViewFunctor
{
public:
	LLSelectFirstFilteredItem() : mItemSelected(FALSE), mFolderSelected(FALSE) {}
	virtual ~LLSelectFirstFilteredItem() {}
	virtual void doFolder(LLFolderViewFolder* folder);
	virtual void doItem(LLFolderViewItem* item);
	BOOL wasItemSelected() { return mItemSelected || mFolderSelected; }
protected:
	BOOL mItemSelected;
	BOOL mFolderSelected;
};

class LLOpenFilteredFolders : public LLFolderViewFunctor
{
public:
	LLOpenFilteredFolders()  {}
	virtual ~LLOpenFilteredFolders() {}
	virtual void doFolder(LLFolderViewFolder* folder);
	virtual void doItem(LLFolderViewItem* item);
};

class LLSaveFolderState : public LLFolderViewFunctor
{
public:
	LLSaveFolderState() : mApply(FALSE) {}
	virtual ~LLSaveFolderState() {}
	virtual void doFolder(LLFolderViewFolder* folder);
	virtual void doItem(LLFolderViewItem* item) {}
	void setApply(BOOL apply);
	void clearOpenFolders() { mOpenFolders.clear(); }
protected:
	std::set<LLUUID> mOpenFolders;
	BOOL mApply;
};

class LLOpenFoldersWithSelection : public LLFolderViewFunctor
{
public:
	LLOpenFoldersWithSelection() {}
	virtual ~LLOpenFoldersWithSelection() {}
	virtual void doFolder(LLFolderViewFolder* folder);
	virtual void doItem(LLFolderViewItem* item);
};

// Flags for buildContextMenu()
const U32 SUPPRESS_OPEN_ITEM = 0x1;
const U32 FIRST_SELECTED_ITEM = 0x2;

#endif // LL_LLFOLDERVIEW_H