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CPOutlineView.j
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CPOutlineView.j
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/*
* CPOutlineView.j
* AppKit
*
* Created by Francisco Tolmasky.
* Copyright 2009, 280 North, 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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
*/
@import "CPTableColumn.j"
@import "CPTableView.j"
CPOutlineViewColumnDidMoveNotification = @"CPOutlineViewColumnDidMoveNotification";
CPOutlineViewColumnDidResizeNotification = @"CPOutlineViewColumnDidResizeNotification";
CPOutlineViewItemDidCollapseNotification = @"CPOutlineViewItemDidCollapseNotification";
CPOutlineViewItemDidExpandNotification = @"CPOutlineViewItemDidExpandNotification";
CPOutlineViewItemWillCollapseNotification = @"CPOutlineViewItemWillCollapseNotification";
CPOutlineViewItemWillExpandNotification = @"CPOutlineViewItemWillExpandNotification";
CPOutlineViewSelectionDidChangeNotification = @"CPOutlineViewSelectionDidChangeNotification";
CPOutlineViewSelectionIsChangingNotification = @"CPOutlineViewSelectionIsChangingNotification";
var CPOutlineViewDataSource_outlineView_setObjectValue_forTableColumn_byItem_ = 1 << 1,
CPOutlineViewDataSource_outlineView_shouldDeferDisplayingChildrenOfItem_ = 1 << 2,
CPOutlineViewDataSource_outlineView_acceptDrop_item_childIndex_ = 1 << 3,
CPOutlineViewDataSource_outlineView_validateDrop_proposedItem_proposedChildIndex_ = 1 << 4,
CPOutlineViewDataSource_outlineView_validateDrop_proposedRow_proposedDropOperation_ = 1 << 5,
CPOutlineViewDataSource_outlineView_namesOfPromisedFilesDroppedAtDestination_forDraggedItems_ = 1 << 6,
CPOutlineViewDataSource_outlineView_itemForPersistentObject_ = 1 << 7,
CPOutlineViewDataSource_outlineView_persistentObjectForItem_ = 1 << 8,
CPOutlineViewDataSource_outlineView_writeItems_toPasteboard_ = 1 << 9,
CPOutlineViewDataSource_outlineView_sortDescriptorsDidChange_ = 1 << 10;
var CPOutlineViewDelegate_outlineView_dataViewForTableColumn_item_ = 1 << 1,
CPOutlineViewDelegate_outlineView_didClickTableColumn_ = 1 << 2,
CPOutlineViewDelegate_outlineView_didDragTableColumn_ = 1 << 3,
CPOutlineViewDelegate_outlineView_heightOfRowByItem_ = 1 << 4,
CPOutlineViewDelegate_outlineView_isGroupItem_ = 1 << 5,
CPOutlineViewDelegate_outlineView_mouseDownInHeaderOfTableColumn_ = 1 << 6,
CPOutlineViewDelegate_outlineView_nextTypeSelectMatchFromItem_toItem_forString_ = 1 << 7,
CPOutlineViewDelegate_outlineView_selectionIndexesForProposedSelection_ = 1 << 8,
CPOutlineViewDelegate_outlineView_shouldCollapseItem_ = 1 << 9,
CPOutlineViewDelegate_outlineView_shouldEditTableColumn_item_ = 1 << 10,
CPOutlineViewDelegate_outlineView_shouldExpandItem_ = 1 << 11,
CPOutlineViewDelegate_outlineView_shouldReorderColumn_toColumn_ = 1 << 12,
CPOutlineViewDelegate_outlineView_shouldSelectItem_ = 1 << 13,
CPOutlineViewDelegate_outlineView_shouldSelectTableColumn_ = 1 << 14,
CPOutlineViewDelegate_outlineView_shouldShowOutlineDisclosureControlForItem_ = 1 << 15,
CPOutlineViewDelegate_outlineView_shouldShowViewExpansionForTableColumn_item_ = 1 << 16,
CPOutlineViewDelegate_outlineView_shouldTrackView_forTableColumn_item_ = 1 << 17,
CPOutlineViewDelegate_outlineView_shouldTypeSelectForEvent_withCurrentSearchString_ = 1 << 18,
CPOutlineViewDelegate_outlineView_sizeToFitWidthOfColumn_ = 1 << 19,
CPOutlineViewDelegate_outlineView_toolTipForView_rect_tableColumn_item_mouseLocation_ = 1 << 20,
CPOutlineViewDelegate_outlineView_typeSelectStringForTableColumn_item_ = 1 << 21,
CPOutlineViewDelegate_outlineView_willDisplayOutlineView_forTableColumn_item_ = 1 << 22,
CPOutlineViewDelegate_outlineView_willDisplayView_forTableColumn_item_ = 1 << 23,
CPOutlineViewDelegate_selectionShouldChangeInOutlineView_ = 1 << 24,
CPOutlineViewDelegate_outlineView_menuForTableColumn_item_ = 1 << 25;
CPOutlineViewDropOnItemIndex = -1;
var CPOutlineViewCoalesceSelectionNotificationStateOff = 0,
CPOutlineViewCoalesceSelectionNotificationStateOn = 1,
CPOutlineViewCoalesceSelectionNotificationStateDid = 2;
#define SELECTION_SHOULD_CHANGE(anOutlineView) (!((anOutlineView)._implementedOutlineViewDelegateMethods & CPOutlineViewDelegate_selectionShouldChangeInOutlineView_) || [(anOutlineView)._outlineViewDelegate selectionShouldChangeInOutlineView:(anOutlineView)])
#define SHOULD_SELECT_ITEM(anOutlineView, anItem) (!((anOutlineView)._implementedOutlineViewDelegateMethods & CPOutlineViewDelegate_outlineView_shouldSelectItem_) || [(anOutlineView)._outlineViewDelegate outlineView:(anOutlineView) shouldSelectItem:(anItem)])
/*!
@ingroup appkit
@class CPOutlineView
CPOutlineView is a subclass of CPTableView that inherits the row and
column format to display hierarchical data. The outlineview adds the
ability to expand and collapse items. This is useful for browsing a tree
like structure such as directories or a filesystem.
Like the tableview, an outlineview uses a data source to supply its data.
For this reason you must implement a couple data source methods
(documented in setDataSource:).
Theme states for custom data views are documented in CPTableView.
*/
@implementation CPOutlineView : CPTableView
{
id _outlineViewDataSource;
id _outlineViewDelegate;
CPTableColumn _outlineTableColumn;
float _indentationPerLevel;
BOOL _indentationMarkerFollowsDataView;
CPInteger _implementedOutlineViewDataSourceMethods;
CPInteger _implementedOutlineViewDelegateMethods;
Object _rootItemInfo;
CPMutableArray _itemsForRows;
Object _itemInfosForItems;
CPControl _disclosureControlPrototype;
CPArray _disclosureControlsForRows;
CPData _disclosureControlData;
CPArray _disclosureControlQueue;
BOOL _shouldRetargetItem;
id _retargetedItem;
BOOL _shouldRetargetChildIndex;
CPInteger _retargedChildIndex;
CPTimer _dragHoverTimer;
id _dropItem;
BOOL _coalesceSelectionNotificationState;
}
- (id)initWithFrame:(CGRect)aFrame
{
self = [super initWithFrame:aFrame];
if (self)
{
_selectionHighlightStyle = CPTableViewSelectionHighlightStyleSourceList;
// The root item has weight "0", thus represents the weight solely of its descendants.
_rootItemInfo = { isExpanded:YES, isExpandable:NO, shouldShowOutlineDisclosureControl:NO, level:-1, row:-1, children:[], weight:0 };
_itemsForRows = [];
_itemInfosForItems = { };
_disclosureControlsForRows = [];
_retargetedItem = nil;
_shouldRetargetItem = NO;
_retargedChildIndex = nil;
_shouldRetargetChildIndex = NO;
[self setIndentationPerLevel:16.0];
[self setIndentationMarkerFollowsDataView:YES];
[super setDataSource:[[_CPOutlineViewTableViewDataSource alloc] initWithOutlineView:self]];
[super setDelegate:[[_CPOutlineViewTableViewDelegate alloc] initWithOutlineView:self]];
[self setDisclosureControlPrototype:[[CPDisclosureButton alloc] initWithFrame:CGRectMake(0.0, 0.0, 10.0, 10.0)]];
}
return self;
}
/*!
In addition to standard delegation, the outline view also supports data
source delegation. This method sets the data source object. Just like the
TableView you have CPTableColumns but instead of rows you deal with items.
@section required You must implement these data source methods:
Returns the child item at an index of a given item. if item is nil you should return the appropriate root item.
@code - (id)outlineView:(CPOutlineView)outlineView child:(CPInteger)index ofItem:(id)item; @endcode
Returns YES if the item is expandable, otherwise NO.
@code - (BOOL)outlineView:(CPOutlineView)outlineView isItemExpandable:(id)item; @endcode
Returns the number of child items of a given item. If item is nil you should return the number of top level (root) items.
@code - (int)outlineView:(CPOutlineView)outlineView numberOfChildrenOfItem:(id)item; @endcode
Returns the object value of the item in a given column.
@code - (id)outlineView:(CPOutlineView)outlineView objectValueForTableColumn:(CPTableColumn)tableColumn byItem:(id)item; @endcode
---------
@section optional The following methods are optional:
@section editin Editing:
Sets the data object value for an item in a given column. This needs to be implemented if you want inline editing support.
@code - (void)outlineView:(CPOutlineView)outlineView setObjectValue:(id)object forTableColumn:(CPTableColumn)tableColumn byItem:(id)item; @endcode
@section sorting Sorting:
The outlineview will call this method if you click the table header. You should sort the datasource based off of the new sort descriptors and reload the data
@code - (void)outlineView:(CPOutlineView)outlineView sortDescriptorsDidChange:(CPArray)oldDescriptors; @endcode
@section draganddrop Drag and Drop:
@note In order for the outlineview to receive drops don't forget to first
register the tableview for drag types like you do with every other view @endnote
Return YES if the operation was successful otherwise return NO.
The data source should incorporate the data from the dragging pasteboard in this method implementation.
To get this data use the draggingPasteboard method on the CPDraggingInfo object.
@code - (BOOL)outlineView:(CPOutlineView)outlineView acceptDrop:(id < CPDraggingInfo >)info item:(id)item childIndex:(CPInteger)index; @endcode
Return the drag operation (move, copy, etc) that should be performed if a registered drag type is over the tableview
The data source can retarget a drop if you want by calling <pre>-(void)setDropItem:(id)anItem dropChildIndex:(int)anIndex;</pre>
@code - (CPDragOperation)outlineView:(CPOutlineView)outlineView validateDrop:(id < CPDraggingInfo >)info proposedItem:(id)item proposedChildIndex:(CPInteger)index; @endcode
Returns YES if the drop operation is allowed otherwise NO.
This method is invoked by the outlineview after a drag should begin, but before it is started. If you don't want the drag to being return NO.
If you want the drag to begin you should return YES and place the drag data on the pboard.
@code - (BOOL)outlineView:(CPOutlineView)outlineView writeItems:(CPArray)items toPasteboard:(CPPasteboard)pboard; @endcode
*/
- (void)setDataSource:(id)aDataSource
{
if (_outlineViewDataSource === aDataSource)
return;
if (![aDataSource respondsToSelector:@selector(outlineView:child:ofItem:)])
[CPException raise:CPInternalInconsistencyException reason:"Data source must implement 'outlineView:child:ofItem:'"];
if (![aDataSource respondsToSelector:@selector(outlineView:isItemExpandable:)])
[CPException raise:CPInternalInconsistencyException reason:"Data source must implement 'outlineView:isItemExpandable:'"];
if (![aDataSource respondsToSelector:@selector(outlineView:numberOfChildrenOfItem:)])
[CPException raise:CPInternalInconsistencyException reason:"Data source must implement 'outlineView:numberOfChildrenOfItem:'"];
if (![aDataSource respondsToSelector:@selector(outlineView:objectValueForTableColumn:byItem:)])
[CPException raise:CPInternalInconsistencyException reason:"Data source must implement 'outlineView:objectValueForTableColumn:byItem:'"];
_outlineViewDataSource = aDataSource;
_implementedOutlineViewDataSourceMethods = 0;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:setObjectValue:forTableColumn:byItem:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_setObjectValue_forTableColumn_byItem_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:shouldDeferDisplayingChildrenOfItem:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_shouldDeferDisplayingChildrenOfItem_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:acceptDrop:item:childIndex:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_acceptDrop_item_childIndex_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:validateDrop:proposedItem:proposedChildIndex:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_validateDrop_proposedItem_proposedChildIndex_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:validateDrop:proposedRow:proposedDropOperation:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_validateDrop_proposedRow_proposedDropOperation_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:namesOfPromisedFilesDroppedAtDestination:forDraggedItems:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_namesOfPromisedFilesDroppedAtDestination_forDraggedItems_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:itemForPersistentObject:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_itemForPersistentObject_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:persistentObjectForItem:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_persistentObjectForItem_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:writeItems:toPasteboard:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_writeItems_toPasteboard_;
if ([_outlineViewDataSource respondsToSelector:@selector(outlineView:sortDescriptorsDidChange:)])
_implementedOutlineViewDataSourceMethods |= CPOutlineViewDataSource_outlineView_sortDescriptorsDidChange_;
[self reloadData];
}
/*!
Returns the datasource object.
@return id - The data source object
*/
- (id)dataSource
{
return _outlineViewDataSource;
}
/*!
Used to query whether an item is expandable or not.
@param anItem - the item you are interested in.
@return BOOL - YES if the item is expandable, otherwise NO.
*/
- (BOOL)isExpandable:(id)anItem
{
if (!anItem)
return YES;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return NO;
return itemInfo.isExpandable;
}
- (BOOL)_shouldShowOutlineDisclosureControlForItem:(id)anItem
{
if (!anItem)
return YES;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return YES;
return itemInfo.shouldShowOutlineDisclosureControl;
}
/*!
Used to find if an item is already expanded.
@param anItem - the item you are interest in.
@return BOOL - Yes if the item is already expanded, otherwise NO.
*/
- (BOOL)isItemExpanded:(id)anItem
{
if (!anItem)
return YES;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return NO;
return itemInfo.isExpanded;
}
/*!
Expands a given item.
@param anItem - the item to expand.
*/
- (void)expandItem:(id)anItem
{
[self expandItem:anItem expandChildren:NO];
}
/*!
Expands a given item, and optionally all the children of that item.
@param anItem - the item you want to expand.
@param shouldExpandChildren - Pass YES if you want to expand all the children of anItem, otherwise NO.
*/
- (void)expandItem:(id)anItem expandChildren:(BOOL)shouldExpandChildren
{
var itemInfo = null;
if (!anItem)
itemInfo = _rootItemInfo;
else
itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return;
// When shouldExpandChildren is YES, we need to make sure we're collecting
// selection notifications so that exactly one IsChanging and one
// DidChange is sent as needed, for the totality of the operation.
var isTopLevel = NO;
if (!_coalesceSelectionNotificationState)
{
isTopLevel = YES;
_coalesceSelectionNotificationState = CPOutlineViewCoalesceSelectionNotificationStateOn;
}
// To prevent items which are already expanded from firing notifications.
if (!itemInfo.isExpanded)
{
[self _noteItemWillExpand:anItem];
var previousRowCount = [self numberOfRows];
itemInfo.isExpanded = YES;
[self reloadItem:anItem reloadChildren:YES];
[self _noteItemDidExpand:anItem];
// Shift selection indexes below so that the same items remain selected.
var rowCountDelta = [self numberOfRows] - previousRowCount;
if (rowCountDelta)
{
var selection = [self selectedRowIndexes],
expandIndex = [self rowForItem:anItem] + 1;
if ([selection intersectsIndexesInRange:CPMakeRange(expandIndex, _itemsForRows.length)])
{
[self _noteSelectionIsChanging];
[selection shiftIndexesStartingAtIndex:expandIndex by:rowCountDelta];
[self _setSelectedRowIndexes:selection]; // _noteSelectionDidChange will be suppressed.
}
}
}
if (shouldExpandChildren)
{
var children = itemInfo.children,
childIndex = children.length;
while (childIndex--)
[self expandItem:children[childIndex] expandChildren:YES];
}
if (isTopLevel)
{
var r = _coalesceSelectionNotificationState;
_coalesceSelectionNotificationState = CPOutlineViewCoalesceSelectionNotificationStateOff;
if (r === CPOutlineViewCoalesceSelectionNotificationStateDid)
[self _noteSelectionDidChange];
}
}
/*!
Collapse a given item.
@param anItem - The item you want to collapse.
*/
- (void)collapseItem:(id)anItem
{
if (!anItem)
return;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return;
if (!itemInfo.isExpanded)
return;
// Don't spam notifications.
_coalesceSelectionNotificationState = CPOutlineViewCoalesceSelectionNotificationStateOn;
[self _noteItemWillCollapse:anItem];
// Update selections:
// * Deselect items inside the collapsed item.
// * Shift row selections below the collapsed item so that the same logical items remain selected.
var collapseTopIndex = [self rowForItem:anItem],
topLevel = [self levelForRow:collapseTopIndex],
collapseEndIndex = collapseTopIndex;
while (collapseEndIndex + 1 < _itemsForRows.length && [self levelForRow:collapseEndIndex + 1] > topLevel)
collapseEndIndex++;
var collapseRange = CPMakeRange(collapseTopIndex + 1, collapseEndIndex - collapseTopIndex);
if (collapseRange.length)
{
var selection = [self selectedRowIndexes];
if ([selection intersectsIndexesInRange:collapseRange])
{
[self _noteSelectionIsChanging];
[selection removeIndexesInRange:collapseRange];
[self _setSelectedRowIndexes:selection]; // _noteSelectionDidChange will be suppressed.
}
// Shift any selected rows below upwards.
if ([selection intersectsIndexesInRange:CPMakeRange(collapseEndIndex + 1, _itemsForRows.length)])
{
[self _noteSelectionIsChanging];
[selection shiftIndexesStartingAtIndex:collapseEndIndex + 1 by:-collapseRange.length];
[self _setSelectedRowIndexes:selection]; // _noteSelectionDidChange will be suppressed.
}
}
itemInfo.isExpanded = NO;
[self reloadItem:anItem reloadChildren:YES];
[self _noteItemDidCollapse:anItem];
// Send selection notifications only after the items have loaded so that
// the new selection is consistent with the actual rows for any observers.
var r = _coalesceSelectionNotificationState;
_coalesceSelectionNotificationState = CPOutlineViewCoalesceSelectionNotificationStateOff;
if (r === CPOutlineViewCoalesceSelectionNotificationStateDid)
[self _noteSelectionDidChange];
}
/*!
Reloads the data for an item.
@param anItem - The item you want to reload.
*/
- (void)reloadItem:(id)anItem
{
[self reloadItem:anItem reloadChildren:NO];
}
/*!
Reloads the data for a given item and optionally the children.
@param anItem - The item you want to reload.
@param shouldReloadChildren - Pass YES if you want to reload all the children, otherwise NO.
*/
- (void)reloadItem:(id)anItem reloadChildren:(BOOL)shouldReloadChildren
{
if (!!shouldReloadChildren || !anItem)
_loadItemInfoForItem(self, anItem);
else
_reloadItem(self, anItem);
[super reloadData];
}
/*!
Returns the item at a given row index. If no item exists nil is returned.
@param aRow - The row index you want to find the item at.
@return id - The item at a given index.
*/
- (id)itemAtRow:(CPInteger)aRow
{
return _itemsForRows[aRow] || nil;
}
/*!
Returns the row of a given item
@param anItem - The item you want to find the row of.
@return int - The row index of a given item.
*/
- (CPInteger)rowForItem:(id)anItem
{
if (!anItem)
return _rootItemInfo.row;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return CPNotFound;
return itemInfo.row;
}
/*!
Sets the table column you want to display the disclosure button in. If you
do not want an outline column pass nil.
@param aTableColumn - The CPTableColumn you want to use for hierarchical data.
*/
- (void)setOutlineTableColumn:(CPTableColumn)aTableColumn
{
if (_outlineTableColumn === aTableColumn)
return;
_outlineTableColumn = aTableColumn;
// FIXME: efficiency.
[self reloadData];
}
/*!
Returns the table column used to display hierarchical data.
@return CPTableColumn - The table column that displays the disclosure button.
*/
- (CPTableColumn)outlineTableColumn
{
return _outlineTableColumn;
}
/*!
Returns the indentation level of a given item. If the item is nil (the top
level root item) CPNotFound is returned. Indentation levels are zero
based, thus items that are not indented return 0.
@param anItem - The item you want the indentation level for.
@return int - the indentation level of anItem.
*/
- (CPInteger)levelForItem:(id)anItem
{
if (!anItem)
return _rootItemInfo.level;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return CPNotFound;
return itemInfo.level;
}
/*!
Returns the indentation level for a given row. If the row is invalid
CPNotFound is returned. Rows that are not indented return 0.
@param aRow - the row of the receiver
@return int - the indentation level of aRow.
*/
- (CPInteger)levelForRow:(CPInteger)aRow
{
return [self levelForItem:[self itemAtRow:aRow]];
}
/*!
Sets the number of pixels to indent an item at each indentation level.
@param anIndentationWidth - the width of each indentation level.
*/
- (void)setIndentationPerLevel:(float)anIndentationWidth
{
if (_indentationPerLevel === anIndentationWidth)
return;
_indentationPerLevel = anIndentationWidth;
// FIXME: efficiency!!!!
[self reloadData];
}
/*!
Returns the width of an indentation level.
@return float - the width of the indentation per level.
*/
- (float)indentationPerLevel
{
return _indentationPerLevel;
}
/*!
Sets the layout behavior of disclosure button. If you pass NO the
disclosure button will always align itself to the left of the outline
column.
@param indentationMarkerShouldFollowDataView - Pass YES if the disclosure control should be indented along with the dataview, otherwise NO.
*/
- (void)setIndentationMarkerFollowsDataView:(BOOL)indentationMarkerShouldFollowDataView
{
if (_indentationMarkerFollowsDataView === indentationMarkerShouldFollowDataView)
return;
_indentationMarkerFollowsDataView = indentationMarkerShouldFollowDataView;
// !!!!
[self reloadData];
}
/*!
Returns the layout behavior of the disclosure buttons.
@return BOOL - YES if the disclosure control indents itself with the
dataview, otherwise NO if the control is always aligned to the left of
the outline column
*/
- (BOOL)indentationMarkerFollowsDataView
{
return _indentationMarkerFollowsDataView;
}
/*!
Returns the parent item for a given item. If the item is a top level root object nil is returned.
@param anItem - The item of the receiver.
@return id - The parent item of anItem. If no parent exists (the item is a
root item) nil is returned.
*/
- (id)parentForItem:(id)anItem
{
if (!anItem)
return nil;
var itemInfo = _itemInfosForItems[[anItem UID]];
if (!itemInfo)
return nil;
var parent = itemInfo.parent;
// Check if the parent is the root item because we never return the actual root item
if (itemInfo[[parent UID]] === _rootItemInfo)
parent = nil;
return parent;
}
/*!
@ignore
Returns the frame of the dataview at the row given for the outline column.
*/
- (CGRect)_frameOfOutlineDataViewAtRow:(CPInteger)aRow
{
var columnIndex = [[self tableColumns] indexOfObject:_outlineTableColumn],
frame = [super frameOfDataViewAtColumn:columnIndex row:aRow],
indentationWidth = ([self levelForRow:aRow] + 1) * [self indentationPerLevel];
frame.origin.x += indentationWidth;
frame.size.width -= indentationWidth;
return frame;
}
/*!
Returns the frame of the disclosure button for the outline column. If the
item is not expandable a CGZeroRect is returned. Subclasses can return a
CGZeroRect to prevent the disclosure control from being displayed.
@param aRow - The row of the receiver
@return CGRect - The rect of the disclosure button at aRow.
*/
- (CGRect)frameOfOutlineDisclosureControlAtRow:(CPInteger)aRow
{
var theItem = [self itemAtRow:aRow];
if (![self isExpandable:theItem] || ![self _shouldShowOutlineDisclosureControlForItem:theItem])
return _CGRectMakeZero();
var dataViewFrame = [self _frameOfOutlineDataViewAtRow:aRow],
disclosureWidth = _CGRectGetWidth([_disclosureControlPrototype frame]),
frame = _CGRectMake(_CGRectGetMinX(dataViewFrame) - disclosureWidth, _CGRectGetMinY(dataViewFrame), disclosureWidth, _CGRectGetHeight(dataViewFrame));
return frame;
}
/*!
@ignore
Select or deselect rows, this is overridden because we need to change the color or the outline control.
*/
- (void)_performSelection:(BOOL)select forRow:(CPInteger)rowIndex context:(id)context
{
[super _performSelection:select forRow:rowIndex context:context];
var control = _disclosureControlsForRows[rowIndex],
selector = select ? @"setThemeState:" : @"unsetThemeState:";
[control performSelector:CPSelectorFromString(selector) withObject:CPThemeStateSelected];
}
/*!
Sets the delegate for the outlineview.
The following methods can be implemented:
@param aDelegate - the delegate object you wish to set for the receiver.
@section notifications User Interaction Notifications:
Called when the user moves a column in the outlineview.
@code - (void)outlineViewColumnDidMove:(CPNotification)notification; @endcode
Called when the user resizes a column in the outlineview.
@code - (void)outlineViewColumnDidResize:(CPNotification)notification; @endcode
Called when the user collapses an item in the outlineview.
@code - (void)outlineViewItemDidCollapse:(CPNotification)notification; @endcode
Called when the user expands an item in the outlineview.
@code - (void)outlineViewItemDidExpand:(CPNotification)notification; @endcode
Called when the user collapses an item in the outlineview, but before the item is actually collapsed.
@code - (void)outlineViewItemWillCollapse:(CPNotification)notification; @endcode
Called when the used expands an item, but before the item is actually expanded.
@code - (void)outlineViewItemWillExpand:(CPNotification)notification; @endcode
Called when the user changes the selection of the outlineview.
@code - (void)outlineViewSelectionDidChange:(CPNotification)notification; @endcode
Called when the user changes the selection of the outlineview, but before the change is made.
@code - (void)outlineViewSelectionIsChanging:(CPNotification)notification; @endcode
@section expandingandcollapsing Expanding and collapsing items:
Return YES if the item should be given permission to expand, otherwise NO.
@code - (BOOL)outlineView:(CPOutlineView)outlineView shouldExpandItem:(id)item; @endcode
Return YES if the item should be given permission to collapse, otherwise NO.
@code - (BOOL)outlineView:(CPOutlineView)outlineView shouldCollapseItem:(id)item; @endcode
@section selection Selection:
Return YES to allow the selection of tableColumn, otherwise NO.
@code- (BOOL)outlineView:(CPOutlineView)outlineView shouldSelectTableColumn:(CPTableColumn)tableColumn; @endcode
Return YES to allow the selection of an item, otherwise NO.
@code- (BOOL)outlineView:(CPOutlineView)outlineView shouldSelectItem:(id)item; @endcode
Return YES to allow the selection of the outlineview to be changed, otherwise NO.
@code - (BOOL)selectionShouldChangeInOutlineView:(CPOutlineView)outlineView; @endcode
@section dataviews Displaying DataViews:
Called when a dataView is about to be displayed. This gives you the ability to alter the dataView if needed.
@code - (void)outlineView:(CPOutlineView)outlineView willDisplayView:(id)dataView forTableColumn:(CPTableColumn)tableColumn item:(id)item; @endcode
@section editin Editing:
Return YES to allow for editing of a dataview at given item and tableColumn, otherwise NO to prevent the edit.
@code - (BOOL)outlineView:(CPOutlineView)outlineView shouldEditTableColumn:(CPTableColumn)tableColumn item:(id)item; @endcode
@section groups Group Items:
Implement this to indicate whether a given item should be rendered using the group item style.
Return YES if the item is a group item, otherwise NO.
@code - (BOOL)outlineView:(CPOutlineView)outlineView isGroupItem:(id)item; @endcode
@section variableitems Variable Item Heights
Implement this method to get custom heights of rows based on the item.
This delegate method will be passed your 'item' object and expects you to return an integer height.
@note This should only be implemented if rows will be different heights, if you want to set a height for ALL of your rows see -setRowHeight:@endnote
@code - (int)outlineView:(CPOutlineView)outlineView heightOfRowByItem:(id)anItem; @endcode
*/
- (void)setDelegate:(id)aDelegate
{
if (_outlineViewDelegate === aDelegate)
return;
var defaultCenter = [CPNotificationCenter defaultCenter];
if (_outlineViewDelegate)
{
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewColumnDidMove:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewColumnDidMoveNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewColumnDidResize:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewColumnDidResizeNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewSelectionDidChange:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewSelectionDidChangeNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewSelectionIsChanging:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewSelectionIsChangingNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemWillExpand:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewItemWillExpandNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemDidExpand:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewItemDidExpandNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemWillCollapse:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewItemWillCollapseNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemDidCollapse:)])
[defaultCenter
removeObserver:_outlineViewDelegate
name:CPOutlineViewItemDidCollapseNotification
object:self];
}
_outlineViewDelegate = aDelegate;
_implementedOutlineViewDelegateMethods = 0;
var delegateMethods = [
CPOutlineViewDelegate_outlineView_dataViewForTableColumn_item_ , @selector(outlineView:dataViewForTableColumn:item:),
CPOutlineViewDelegate_outlineView_didClickTableColumn_ , @selector(outlineView:didClickTableColumn:),
CPOutlineViewDelegate_outlineView_didDragTableColumn_ , @selector(outlineView:didDragTableColumn:),
CPOutlineViewDelegate_outlineView_heightOfRowByItem_ , @selector(outlineView:heightOfRowByItem:),
CPOutlineViewDelegate_outlineView_isGroupItem_ , @selector(outlineView:isGroupItem:),
CPOutlineViewDelegate_outlineView_mouseDownInHeaderOfTableColumn_ , @selector(outlineView:mouseDownInHeaderOfTableColumn:),
CPOutlineViewDelegate_outlineView_nextTypeSelectMatchFromItem_toItem_forString_ , @selector(outlineView:nextTypeSelectMatchFromItem:toItem:forString:),
CPOutlineViewDelegate_outlineView_selectionIndexesForProposedSelection_ , @selector(outlineView:selectionIndexesForProposedSelection:),
CPOutlineViewDelegate_outlineView_shouldCollapseItem_ , @selector(outlineView:shouldCollapseItem:),
CPOutlineViewDelegate_outlineView_shouldEditTableColumn_item_ , @selector(outlineView:shouldEditTableColumn:item:),
CPOutlineViewDelegate_outlineView_shouldExpandItem_ , @selector(outlineView:shouldExpandItem:),
CPOutlineViewDelegate_outlineView_shouldReorderColumn_toColumn_ , @selector(outlineView:shouldReorderColumn:toColumn:),
CPOutlineViewDelegate_outlineView_shouldSelectItem_ , @selector(outlineView:shouldSelectItem:),
CPOutlineViewDelegate_outlineView_shouldSelectTableColumn_ , @selector(outlineView:shouldSelectTableColumn:),
CPOutlineViewDelegate_outlineView_shouldShowOutlineDisclosureControlForItem_ , @selector(outlineView:shouldShowOutlineDisclosureControlForItem:),
CPOutlineViewDelegate_outlineView_shouldShowViewExpansionForTableColumn_item_ , @selector(outlineView:shouldShowViewExpansionForTableColumn:item:),
CPOutlineViewDelegate_outlineView_shouldTrackView_forTableColumn_item_ , @selector(outlineView:shouldTrackView:forTableColumn:item:),
CPOutlineViewDelegate_outlineView_shouldTypeSelectForEvent_withCurrentSearchString_ , @selector(outlineView:shouldTypeSelectForEvent:withCurrentSearchString:),
CPOutlineViewDelegate_outlineView_sizeToFitWidthOfColumn_ , @selector(outlineView:sizeToFitWidthOfColumn:),
CPOutlineViewDelegate_outlineView_toolTipForView_rect_tableColumn_item_mouseLocation_, @selector(outlineView:toolTipForView:rect:tableColumn:item:mouseLocation:),
CPOutlineViewDelegate_outlineView_typeSelectStringForTableColumn_item_ , @selector(outlineView:typeSelectStringForTableColumn:item:),
CPOutlineViewDelegate_outlineView_willDisplayOutlineView_forTableColumn_item_ , @selector(outlineView:willDisplayOutlineView:forTableColumn:item:),
CPOutlineViewDelegate_outlineView_willDisplayView_forTableColumn_item_ , @selector(outlineView:willDisplayView:forTableColumn:item:),
CPOutlineViewDelegate_selectionShouldChangeInOutlineView_ , @selector(selectionShouldChangeInOutlineView:),
CPOutlineViewDelegate_outlineView_menuForTableColumn_item_ , @selector(outlineView:menuForTableColumn:item:)
],
delegateCount = [delegateMethods count];
for (var i = 0; i < delegateCount; i += 2)
{
var bitMask = delegateMethods[i],
selector = delegateMethods[i + 1];
if ([_outlineViewDelegate respondsToSelector:selector])
_implementedOutlineViewDelegateMethods |= bitMask;
}
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewColumnDidMove:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewColumnDidMove:)
name:CPOutlineViewColumnDidMoveNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewColumnDidResize:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewColumnDidMove:)
name:CPOutlineViewColumnDidResizeNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewSelectionDidChange:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewSelectionDidChange:)
name:CPOutlineViewSelectionDidChangeNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewSelectionIsChanging:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewSelectionIsChanging:)
name:CPOutlineViewSelectionIsChangingNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemWillExpand:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewItemWillExpand:)
name:CPOutlineViewItemWillExpandNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemDidExpand:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewItemDidExpand:)
name:CPOutlineViewItemDidExpandNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemWillCollapse:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewItemWillCollapse:)
name:CPOutlineViewItemWillCollapseNotification
object:self];
if ([_outlineViewDelegate respondsToSelector:@selector(outlineViewItemDidCollapse:)])
[defaultCenter
addObserver:_outlineViewDelegate
selector:@selector(outlineViewItemDidCollapse:)
name:CPOutlineViewItemDidCollapseNotification
object:self];
}
- (BOOL)_sendDelegateDeleteKeyPressed
{
if ([[self delegate] respondsToSelector: @selector(outlineViewDeleteKeyPressed:)])
{
[[self delegate] outlineViewDeleteKeyPressed:self];
return YES;
}
return NO;
}
/*!
Returns the delegate object for the outlineview.
*/
- (id)delegate
{
return _outlineViewDelegate;
}
/*!
Sets the prototype of the disclosure control. This is used if you want to
set a special type of button, instead of the default triangle. The control
must implement CPCoding.
@param aControl - the control to be used to expand and collapse items.
*/
- (void)setDisclosureControlPrototype:(CPControl)aControl
{
_disclosureControlPrototype = aControl;
_disclosureControlData = nil;
_disclosureControlQueue = [];
// FIXME: really?
[self reloadData];
}