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Added NSComboBoxCell documentation
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@19480 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Quentin Mathe
parent
506264d1c7
commit
daa0b750c0
3 changed files with 264 additions and 23 deletions
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@ -1,3 +1,7 @@
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2004-06-07 Quentin Mathe <qmathe@club-internet.fr>
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* Source/NSComboBoxCell.m: Added complete documentation.
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* Source/NSComboBox.m: Minor documentation corrections.
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2004-06-06 Quentin Mathe <qmathe@club-internet.fr>
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* Source/NSComboBox.m: Added complete documentation.
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@ -41,12 +41,12 @@ static NSNotificationCenter *nc;
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<heading>Class Description</heading>
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An NSComboBox is what we can call a completion/choices box, derived from
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NSTextField, it allows you to enter text like in a text field but also to click
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in the ellipsis button (indicating the fact other user inputs is possible) on
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the right of it to obtain a list of choices which you can use as the text field
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in the ellipsis button (indicating the fact other user inputs are possible) on
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the right of it to obtain a list of choices whose you can use as the text field
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value by selecting a row in this list. You can also obtain direct completion
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when it is enabled via <code>setCompletes:</code> to get a suggested text
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field value updated as you type.
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Like other NSControls, NSComboBox is a wrapper around a core piece which
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Like other NSControl classes, NSComboBox is a wrapper around a core piece which
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implements the combo box behavior, a cell, which is in this case an
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NSComboBoxCell.
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</unit>
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@ -407,6 +407,17 @@ static NSNotificationCenter *nc;
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return [_cell objectValues];
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}
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/**
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* Returns YES when the combo box cell automatic completion is active, returns
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* NO otherwise.
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* Take a look at the <code>setCompletes:</code> method documentation to know
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* how the automatic completion works.
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*/
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- (BOOL)completes
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{
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return [_cell completes];
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}
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/**
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* Sets whether the combo box cell automatic completion is active or not.
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* The automatic completion tries to complete what the user types in the text
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@ -422,17 +433,6 @@ static NSNotificationCenter *nc;
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[_cell setCompletes: completes];
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}
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/**
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* Returns YES when the combo box cell automatic completion is active, returns
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* NO otherwise.
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* Take a look at the <code>setCompletes:</code> method documentation to know
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* how the automatic completion works.
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*/
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- (BOOL)completes
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{
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return [_cell completes];
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}
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- (void) setDelegate: (id)anObject
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{
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[super setDelegate: anObject];
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@ -205,7 +205,7 @@ static GSComboWindow *gsWindow = nil;
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- (void)dealloc
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{
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// browser, table view and scroll view were not retained so don't release them
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// Browser, table view and scroll view were not retained so don't release them
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[super dealloc];
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}
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@ -390,14 +390,14 @@ static GSComboWindow *gsWindow = nil;
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name: NSWindowWillMoveNotification object: onWindow];
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[nc addObserver: self selector: @selector(onWindowEdited:)
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name: NSWindowWillMiniaturizeNotification object: onWindow];
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/* the notification below doesn't exist currently
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/* The notification below doesn't exist currently
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[nc addObserver: self selector: @selector(onWindowEdited:)
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name: NSWindowWillResizeNotification object: onWindow];
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*/
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[nc addObserver: self selector: @selector(onWindowEdited:)
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name: NSWindowWillCloseNotification object: onWindow];
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// ### Hack
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// ### HACK:
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// ### The code below must be removed when the notifications over will work
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[nc addObserver: self selector: @selector(onWindowEdited:)
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name: NSWindowDidMoveNotification object: onWindow];
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@ -413,8 +413,7 @@ static GSComboWindow *gsWindow = nil;
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[nc removeObserver: self];
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[_tableView setDelegate: self];
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// Hack
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// Need to reset the delegate to receive the next notifications
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// HACK: Need to reset the delegate to receive the next notifications
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[self close];
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@ -504,7 +503,7 @@ static GSComboWindow *gsWindow = nil;
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- (void) noteNumberOfItemsChanged
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{
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// FIXME: Should only load the additional items
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// FIXME: Probably should only load the additional items
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[self reloadData];
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}
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@ -702,6 +701,22 @@ numberOfRowsInColumn: (int)column
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// ---
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/**
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<unit>
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<heading>Class Description</heading>
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An NSComboBoxCell is what we can call a completion/choices box cell, derived from
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NSTextFieldCell, it allows you to enter text like in a text field but also to click
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in the ellipsis button (indicating the fact other user inputs are possible) on
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the right of it to obtain a list of choices whose you can use as the text field
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value by selecting a row in this list. You can also obtain direct completion
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when it is enabled via <code>setCompletes:</code> to get a suggested text
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field value updated as you type.
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Like other NSCell classes, NSComboBoxCell has a matching NSControl named NSComboBox
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which is relying on it to implement the combo box behavior in a standalone
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control.
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</unit>
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*/
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@implementation NSComboBoxCell
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//
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@ -746,58 +761,145 @@ numberOfRowsInColumn: (int)column
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[super dealloc];
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}
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/**
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* Returns YES when the combo box cell displays a vertical scroller for its
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* list, returns NO otherwise.
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* Take note that the scroller will be displayed even when the sum of the items
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* height in the list is inferior to the minimal height of the list displayed
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* area.
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*/
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- (BOOL) hasVerticalScroller { return _hasVerticalScroller; }
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/**
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* Sets whether the combo box cell list displays a vertical scroller, by default
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* it is the case. When <var>flag</var> is NO and the combo cell list has more
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* items (either in its default list or from its data source) than the number
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* returned by <code>numberOfVisibleItems</code>, only a subset of them will be
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* displayed. Uses scroll related methods to position this subset in the combo
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* box cell list.
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* Take note that the scroller will be displayed even when the sum of the items
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* height in the list is inferior to the minimal height of the list displayed
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* area.
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*/
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- (void) setHasVerticalScroller: (BOOL)flag
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{
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_hasVerticalScroller = flag;
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}
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/**
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* Returns the width and the height (as the values of an NSSize variable)
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* between each item of the combo box cell list.
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*/
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- (NSSize) intercellSpacing { return _intercellSpacing; }
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/**
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* Sets the width and the height between each item of the combo box cell list to
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* the values in <var>aSize</var>.
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*/
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- (void) setIntercellSpacing: (NSSize)aSize
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{
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_intercellSpacing = aSize;
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}
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/**
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* Returns the height of the items in the combo box cell list.
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*/
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- (float) itemHeight { return _itemHeight; }
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/**
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* Sets the height of the items in the combo box cell list to
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* <var>itemHeight</var>.
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*/
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- (void) setItemHeight: (float)itemHeight
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{
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if (itemHeight > 14)
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_itemHeight = itemHeight;
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}
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/**
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* Returns the maximum number of allowed items to be displayed in the combo box
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* cell list.
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*/
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- (int) numberOfVisibleItems { return _visibleItems; }
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/**
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* Sets the maximum number of allowed items to be displayed in the combo box
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* cell list.
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*/
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- (void) setNumberOfVisibleItems: (int)visibleItems
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{
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if (visibleItems > 10)
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_visibleItems = visibleItems;
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}
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/**
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* Marks the combo box cell in order to have its items list reloaded in the
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* case it uses a data source, and to have it redisplayed.
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*/
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- (void) reloadData
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{
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[_popup reloadData];
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}
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/**
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* Informs the combo box cell that the number of items in its data source has
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* changed, in order to permit to the scrollers in its displayed list being
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* updated without needing the reload of the data.
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* It is recommended to use this method with a data source that continually
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* receives data in the background, to keep the the combo box cell responsive to
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* the user while the data is received.
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* Take a look at the <code>NSComboBoxDataSource</code> informal protocol
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* specification to know more on the messages NSComboBox sends to its data
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* source.
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*/
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- (void) noteNumberOfItemsChanged
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{
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[_popup noteNumberOfItemsChanged];
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}
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/**
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* Returns YES when the combo box cell uses a data source (which is external) to
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* populate its items list, otherwise returns NO in the case it uses its default
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* list.
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*/
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- (BOOL) usesDataSource { return _usesDataSource; }
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/**
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* Sets according to <var>flag</var> whether the combo box cell uses a data
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* source (which is external) to populate its items list.
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*/
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- (void) setUsesDataSource: (BOOL)flag
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{
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_usesDataSource = flag;
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}
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/**
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* Scrolls the combo box cell list vertically in order to have the item at
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* <var>index</var> in the closest position relative to the top. There is no
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* need to have the list displayed when this method is invoked.
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*/
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- (void) scrollItemAtIndexToTop: (int)index
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{
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[_popup scrollItemAtIndexToTop: index];
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}
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/**
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* Scrolls the combo box cell list vertically in order to have the item at
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* <var>index</var> visible. There is no need to have the list displayed when
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* this method is invoked.
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*/
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- (void) scrollItemAtIndexToVisible: (int)index
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{
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[_popup scrollItemAtIndexToVisible: index];
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}
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/**
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* Selects the combo box cell list row at <var>index</var>.
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* Take note no changes occurs in the combo box cell list when this method is
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* called.
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* Posts an NSComboBoxSelectionDidChangeNotification to the default notification
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* center when there is a new selection different from the previous one.
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*/
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- (void) selectItemAtIndex: (int)index
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{
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// Method called by GSComboWindow when a selection is done in the table view or
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@ -827,6 +929,12 @@ numberOfRowsInColumn: (int)column
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}
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}
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/**
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* Deselects the combo box cell list row at <var>index</var> in the case this
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* row is selected.
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* Posts an NSComboBoxSelectionDidChangeNotification to the default notification
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* center, when there is a new selection.
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*/
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- (void) deselectItemAtIndex: (int)index
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{
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if (_selectedItem == index)
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@ -841,11 +949,22 @@ numberOfRowsInColumn: (int)column
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}
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}
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/**
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* Returns the index of the selected item in the combo box cell list or -1 when
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* there is no selection, the selected item can be related to the data source
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* object in the case <code>usesDataSource</code> returns YES else to the
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* default items list.
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*/
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- (int) indexOfSelectedItem
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{
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return _selectedItem;
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}
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/**
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* Returns the number of items in the the combo box cell list, the numbers of
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* items can be be related to the data source object in the case
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* <code>usesDataSource</code> returns YES else to the default items list.
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*/
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- (int) numberOfItems
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{
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if (_usesDataSource)
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@ -874,7 +993,24 @@ numberOfRowsInColumn: (int)column
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return 0;
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}
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/**
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* Returns the combo box cell data source object which is reponsible to provide
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* the data to be displayed. To know how to implement a data source object,
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* take a look at the NSComboBoxDataSource informal protocol description. In
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* the case <code>usesDataSource</code> returns NO, this method logs a warning.
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*/
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- (id) dataSource { return _dataSource; }
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/**
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* Sets the combo box cell data source to <var>aSource</var>. Just calling this
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* method doesn't set <code>usesDataSource</code> to return YES, you must call
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* <code>setUsesDataSource:</code> with YES before or a warning will be logged.
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* To know how to implement a data source objects, take a look at the
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* NSComboBoxDataSource informal protocol description. When <var>aSource</var>
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* doesn't respond to the methods <code>numberOfItemsInComboBox:</code>
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* <code>comboBox:objectValueForItemAtIndex:</code>, this method
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* logs a warning.
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*/
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- (void) setDataSource: (id)aSource
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{
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if (!_usesDataSource)
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@ -884,6 +1020,11 @@ numberOfRowsInColumn: (int)column
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_dataSource = aSource;
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}
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/**
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* Adds an item to the combo box cell default items list which is used when
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* <code>usesDataSource</code> returns NO. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) addItemWithObjectValue: (id)object
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{
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if (_usesDataSource)
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@ -895,6 +1036,11 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Adds several items in an array to the combo box cell default items list which
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* is used when <code>usesDataSource</code> returns NO. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) addItemsWithObjectValues: (NSArray *)objects
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{
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if (_usesDataSource)
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@ -906,6 +1052,11 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Inserts an item in the combo box cell default items list which
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* is used when <code>usesDataSource</code> returns NO. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) insertItemWithObjectValue: (id)object atIndex: (int)index
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{
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if (_usesDataSource)
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@ -917,6 +1068,11 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Removes an item in the combo box cell default items list which
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* is used when <code>usesDataSource</code> returns NO. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) removeItemWithObjectValue: (id)object
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{
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if (_usesDataSource)
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@ -928,6 +1084,11 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Removes the item with the specified <var>index</var> in the combo box cell
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* default items list which is used when <code>usesDataSource</code> returns NO.
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* In the case <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) removeItemAtIndex: (int)index
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{
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if (_usesDataSource)
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@ -939,6 +1100,11 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Removes all the items in the combo box cell default items list which is used
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* when <code>usesDataSource</code> returns NO. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (void) removeAllItems
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{
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if (_usesDataSource)
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@ -950,6 +1116,15 @@ numberOfRowsInColumn: (int)column
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[self reloadData];
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}
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/**
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* Selects the first item in the default combo box cell list which is equal to
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* <var>object</var>. In the case <code>usesDataSource</code> returns YES, this
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* method logs a warning.
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* Take note that this method doesn't update the text field part value.
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* Posts an NSComboBoxSelectionDidChange notification to the default
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* notification center when the new selection is different than the previous
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* one.
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*/
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- (void) selectItemWithObjectValue: (id)object
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{
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if (_usesDataSource)
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@ -966,6 +1141,12 @@ numberOfRowsInColumn: (int)column
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}
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}
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/**
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* Returns the object value at <var>index</var> within combo box cell default
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* items list. When the index is beyond the end of the list, an NSRangeException is
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* raised. In the case <code>usesDataSource</code> returns YES, this method logs
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* a warning.
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*/
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- (id) itemObjectValueAtIndex: (int)index
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{
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if (_usesDataSource)
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@ -980,6 +1161,11 @@ numberOfRowsInColumn: (int)column
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}
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}
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/**
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* Returns the object value of the selected item in the combo box cell default
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* items list or nil when there is no selection. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (id) objectValueOfSelectedItem
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{
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if (_usesDataSource)
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@ -999,6 +1185,12 @@ numberOfRowsInColumn: (int)column
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}
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}
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/**
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* Returns the lowest index associated with a value in the combo box
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* cell default items list, which is equal to <var>object</var>, and returns
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* NSNotFound when there is no such value. In the case
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* <code>usesDataSource</code> returns YES, this method logs a warning.
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*/
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- (int) indexOfItemWithObjectValue: (id)object
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{
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if (_usesDataSource)
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@ -1011,6 +1203,9 @@ numberOfRowsInColumn: (int)column
|
|||
return [_popUpList indexOfObject: object];
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the combo box cell default items list in an array.
|
||||
*/
|
||||
- (NSArray *)objectValues
|
||||
{
|
||||
if (_usesDataSource)
|
||||
|
|
@ -1024,6 +1219,21 @@ numberOfRowsInColumn: (int)column
|
|||
}
|
||||
|
||||
// Text completion
|
||||
/**
|
||||
* Returns a string by looking in the combo box cell list for an item wich
|
||||
* starts with <var>substring</var>, or nil when there is no such string.
|
||||
* <var>substring</var> is equal to what the user entered in the text field
|
||||
* part.
|
||||
* You rarely needs to call this method explicitly in your code.
|
||||
* By default, the implementation of this method first checks whether the combo
|
||||
* box cell uses a data source and whether the data source responds to
|
||||
* comboBox:completedString: or comboBoxCell:completedString:. When it is the
|
||||
* case, it uses this method to return <var>str</var>, else this method goes
|
||||
* through the combo box cell items one by one and returns the first item found
|
||||
* starting with <var>substring</var>.
|
||||
* In the case, you want another behavior, you can override this method without
|
||||
* need to call the superclass method.
|
||||
*/
|
||||
- (NSString *)completedString:(NSString *)substring
|
||||
{
|
||||
if (_usesDataSource)
|
||||
|
|
@ -1068,7 +1278,24 @@ numberOfRowsInColumn: (int)column
|
|||
return substring;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns YES when the combo box cell automatic completion is active, returns
|
||||
* NO otherwise.
|
||||
* Take a look at the <code>setCompletes:</code> method documentation to know
|
||||
* how the automatic completion works.
|
||||
*/
|
||||
- (BOOL)completes { return _completes; }
|
||||
|
||||
/**
|
||||
* Sets whether the combo box cell automatic completion is active or not.
|
||||
* The automatic completion tries to complete what the user types in the text
|
||||
* field part, it tries to complete only when the the user adds characters at
|
||||
* the end of the string, not when it deletes characters or when the insertion
|
||||
* point precedes the end of the string.
|
||||
* To do the automatic completion, the <code>completedString:</code> method is
|
||||
* called, and when the returned string is longer than the current one in the text
|
||||
* field, the completion occurs and the completed part gets selected.
|
||||
*/
|
||||
- (void)setCompletes:(BOOL)completes
|
||||
{
|
||||
_completes = completes;
|
||||
|
|
@ -1122,7 +1349,7 @@ static inline NSRect buttonCellFrameFromRect(NSRect cellRect)
|
|||
[super drawWithFrame: cellFrame inView: controlView];
|
||||
}
|
||||
|
||||
_lastValidFrame = cellFrame; // used by GSComboWindow to appear in the right position
|
||||
_lastValidFrame = cellFrame; // Used by GSComboWindow to appear in the right position
|
||||
}
|
||||
|
||||
- (void) highlight: (BOOL)flag
|
||||
|
|
@ -1168,7 +1395,7 @@ static inline NSRect buttonCellFrameFromRect(NSRect cellRect)
|
|||
{
|
||||
if (NSMouseInRect(point, textCellFrameFromRect(cellFrame), isFlipped))
|
||||
{
|
||||
return YES;// continue
|
||||
return YES;// Continue
|
||||
}
|
||||
else if (NSMouseInRect(point, buttonCellFrameFromRect(cellFrame), isFlipped))
|
||||
{
|
||||
|
|
@ -1184,7 +1411,7 @@ static inline NSRect buttonCellFrameFromRect(NSRect cellRect)
|
|||
|
||||
/* We can do the call below but it is already done by the target/action we have set for the button cell
|
||||
if (clicked)
|
||||
[self _didClickWithinButton: self]; // not to be used */
|
||||
[self _didClickWithinButton: self]; // Not to be used */
|
||||
|
||||
[controlView lockFocus];
|
||||
[_buttonCell highlight: NO withFrame: buttonCellFrameFromRect(cellFrame) inView: controlView];
|
||||
|
|
@ -1211,6 +1438,10 @@ static inline NSRect buttonCellFrameFromRect(NSRect cellRect)
|
|||
}
|
||||
|
||||
// NSCoding
|
||||
/**
|
||||
* Encodes the combo box cell using <var>encoder</var>. take note that when it
|
||||
* uses a data source, the data source is conditionally encoded.
|
||||
*/
|
||||
- (void) encodeWithCoder: (NSCoder *)coder
|
||||
{
|
||||
[super encodeWithCoder: coder];
|
||||
|
|
@ -1229,6 +1460,12 @@ static inline NSRect buttonCellFrameFromRect(NSRect cellRect)
|
|||
[coder encodeConditionalObject: _dataSource];
|
||||
}
|
||||
|
||||
/**
|
||||
* Initializes the combo box cell with data linked to <var>decoder</var>. Take
|
||||
* note that when the decoded instance uses a data source,
|
||||
* <code>initWithCoder:<var> decodes the data source.
|
||||
* Finally, returns thr initialized object.
|
||||
*/
|
||||
- (id) initWithCoder: (NSCoder *)aDecoder
|
||||
{
|
||||
self = [super initWithCoder: aDecoder];
|
||||
|
|
|
|||
Loading…
Reference in a new issue