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/*
* CPPopUpButton.j
* AppKit
*
* Created by Francisco Tolmasky.
* Copyright 2008, 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 <Foundation/CPGeometry.j>
@import "CPButton.j"
@import "CPKeyValueBinding.j"
@import "CPMenu.j"
@import "CPMenuItem.j"
var VISIBLE_MARGIN = 7.0;
CPPopUpButtonStatePullsDown = CPThemeState("pulls-down");
/*!
@ingroup appkit
@class CPPopUpButton
A CPPopUpButton contains a pop-up menu of items that a user can select from.
*/
@implementation CPPopUpButton : CPButton
{
CPUInteger _selectedIndex;
CPRectEdge _preferredEdge;
}
+ (CPString)defaultThemeClass
{
return "popup-button";
}
+ (CPSet)keyPathsForValuesAffectingSelectedIndex
{
return [CPSet setWithObject:@"objectValue"];
}
+ (CPSet)keyPathsForValuesAffectingSelectedTag
{
return [CPSet setWithObject:@"objectValue"];
}
+ (CPSet)keyPathsForValuesAffectingSelectedItem
{
return [CPSet setWithObject:@"objectValue"];
}
/*!
Initializes the pop-up button to the specified size.
@param aFrame the size for the button
@param shouldPullDown \c YES makes this a pull-down menu, \c NO makes it a pop-up menu.
@return the initialized pop-up button
*/
- (id)initWithFrame:(CGRect)aFrame pullsDown:(BOOL)shouldPullDown
{
self = [super initWithFrame:aFrame];
if (self)
{
[self selectItemAtIndex:CPNotFound];
_preferredEdge = CPMaxYEdge;
[self setValue:CPImageLeft forThemeAttribute:@"image-position"];
[self setValue:CPLeftTextAlignment forThemeAttribute:@"alignment"];
[self setValue:CPLineBreakByTruncatingTail forThemeAttribute:@"line-break-mode"];
[self setMenu:[[CPMenu alloc] initWithTitle:@""]];
[self setPullsDown:shouldPullDown];
var options = CPKeyValueObservingOptionNew | CPKeyValueObservingOptionOld; // | CPKeyValueObservingOptionInitial;
[self addObserver:self forKeyPath:@"menu.items" options:options context:nil];
[self addObserver:self forKeyPath:@"_firstItem.changeCount" options:options context:nil];
[self addObserver:self forKeyPath:@"selectedItem.changeCount" options:options context:nil];
}
return self;
}
- (id)initWithFrame:(CGRect)aFrame
{
return [self initWithFrame:aFrame pullsDown:NO];
}
// Setting the Type of Menu
/*!
Specifies whether the object is a pull-down or a pop-up menu.
If the button pulls down the menu items represent actions, not states.
So the text in the button will NOT change when the user selects something different.
@param shouldPullDown \c YES makes the pop-up button
a pull-down menu. \c NO makes it a pop-up menu.
*/
- (void)setPullsDown:(BOOL)shouldPullDown
{
if (shouldPullDown)
var changed = [self setThemeState:CPPopUpButtonStatePullsDown];
else
var changed = [self unsetThemeState:CPPopUpButtonStatePullsDown];
if (!changed)
return;
var items = [[self menu] itemArray];
if ([items count] <= 0)
return;
[items[0] setHidden:[self pullsDown]];
[self synchronizeTitleAndSelectedItem];
}
/*!
Returns \c YES if the button is a pull-down menu. \c NO if the button is a pop-up menu.
*/
- (BOOL)pullsDown
{
return [self hasThemeState:CPPopUpButtonStatePullsDown];
}
// Inserting and Deleting Items
/*!
Adds a new menu item using a CPMenuItem object.
*/
- (void)addItem:(CPMenuItem)anItem
{
[[self menu] addItem:anItem];
}
/*!
Adds a new menu item with the specified title.
@param the new menu item's title
*/
- (void)addItemWithTitle:(CPString)aTitle
{
[[self menu] addItemWithTitle:aTitle action:NULL keyEquivalent:nil];
}
/*!
Adds multiple new menu items with the titles specified in the provided array.
@param titles an array of names for the new items
*/
- (void)addItemsWithTitles:(CPArray)titles
{
var index = 0,
count = [titles count];
for (; index < count; ++index)
[self addItemWithTitle:titles[index]];
}
/*!
Inserts a new item with the specified title and index location.
@param aTitle the new item's title
@param anIndex the item's index in the menu
*/
- (void)insertItemWithTitle:(CPString)aTitle atIndex:(int)anIndex
{
var items = [self itemArray],
count = [items count];
while (count--)
if ([items[count] title] == aTitle)
[self removeItemAtIndex:count];
[[self menu] insertItemWithTitle:aTitle action:NULL keyEquivalent:nil atIndex:anIndex];
}
/*!
Removes all menu items from the pop-up button's menu
*/
- (void)removeAllItems
{
[[self menu] removeAllItems];
[self synchronizeTitleAndSelectedItem];
}
/*!
Removes a menu item with the specified title from the button.
@param aTitle the title of the item to remove
*/
- (void)removeItemWithTitle:(CPString)aTitle
{
[self removeItemAtIndex:[self indexOfItemWithTitle:aTitle]];
[self synchronizeTitleAndSelectedItem];
}
/*!
Removes the menu item at the specified index
@param anIndex the index of the item to remove
*/
- (void)removeItemAtIndex:(int)anIndex
{
[[self menu] removeItemAtIndex:anIndex];
[self synchronizeTitleAndSelectedItem];
}
// Getting the User's Selection
/*!
Returns the selected item or \c nil if no item is selected.
*/
- (CPMenuItem)selectedItem
{
var indexOfSelectedItem = [self indexOfSelectedItem];
if (indexOfSelectedItem < 0 || indexOfSelectedItem > [self numberOfItems] - 1)
return nil;
return [[self menu] itemAtIndex:indexOfSelectedItem];
}
/*!
Returns the title of the selected item or \c nil if no item is selected.
*/
- (CPString)titleOfSelectedItem
{
return [[self selectedItem] title];
}
/*!
Returns the index of the selected item. If no item is selected, it returns CPNotFound.
*/
- (int)indexOfSelectedItem
{
return _selectedIndex;
}
// Setting the Current Selection
/*!
Selects the specified menu item.
@param aMenuItem the item to select
*/
- (void)selectItem:(CPMenuItem)aMenuItem
{
[self selectItemAtIndex:[self indexOfItem:aMenuItem]];
}
/*!
Selects the item at the specified index
@param anIndex the index of the item to select
*/
- (void)selectItemAtIndex:(CPUInteger)anIndex
{
[self setObjectValue:anIndex];
}
- (void)setSelectedIndex:(CPUInteger)anIndex
{
[self setObjectValue:anIndex];
}
- (CPUInteger)selectedIndex
{
return [self objectValue];
}
/*!
Selects the item at the specified index
@param anIndex the index of the item to select
*/
- (void)setObjectValue:(int)anIndex
{
var indexOfSelectedItem = [self objectValue];
anIndex = parseInt(+anIndex, 10);
if (indexOfSelectedItem === anIndex)
return;
if (indexOfSelectedItem >= 0 && ![self pullsDown])
[[self selectedItem] setState:CPOffState];
_selectedIndex = anIndex;
if (indexOfSelectedItem >= 0 && ![self pullsDown])
[[self selectedItem] setState:CPOnState];
[self synchronizeTitleAndSelectedItem];
}
- (id)objectValue
{
return _selectedIndex;
}
/*!
Selects the menu item with the specified tag
@param the tag of the item to select
*/
- (void)selectItemWithTag:(int)aTag
{
[self selectItemAtIndex:[self indexOfItemWithTag:aTag]];
}
/*!
Selects the item with the specified title
@param the title of the item to select
*/
- (void)selectItemWithTitle:(CPString)aTitle
{
[self selectItemAtIndex:[self indexOfItemWithTitle:aTitle]];
}
// Getting Menu Items
/*!
Returns a count of the number of items in the button's menu.
*/
- (int)numberOfItems
{
return [[self menu] numberOfItems];
}
/*!
Returns an array of the items in the menu
*/
- (CPArray)itemArray
{
return [[self menu] itemArray];
}
/*!
Returns the item at the specified index or \c nil if the item does not exist.
@param anIndex the index of the item to obtain
*/
- (CPMenuItem)itemAtIndex:(unsigned)anIndex
{
return [[self menu] itemAtIndex:anIndex];
}
/*!
Returns the title of the item at the specified index or \c nil if no item exists.
@param anIndex the index of the item
*/
- (CPString)itemTitleAtIndex:(unsigned)anIndex
{
return [[[self menu] itemAtIndex:anIndex] title];
}
/*!
Returns an array of all the menu item titles.
*/
- (CPArray)itemTitles
{
var titles = [],
items = [self itemArray],
index = 0,
count = [items count];
for (; index < count; ++index)
titles.push([items[index] title]);
return titles;
}
/*!
Returns the menu item with the specified title.
@param aTitle the title of the desired menu item
*/
- (CPMenuItem)itemWithTitle:(CPString)aTitle
{
var menu = [self menu],
itemIndex = [menu indexOfItemWithTitle:aTitle];
if (itemIndex === CPNotFound)
return nil;
return [menu itemAtIndex:itemIndex];
}
/*!
Returns the last menu item
*/
- (CPMenuItem)lastItem
{
return [[[self menu] itemArray] lastObject];
}
// Getting the Indices of Menu Items
/*!
Returns the index of the specified item or CPNotFound if the item is not in the list.
@param aMenuItem the item to obtain the index for
*/
- (int)indexOfItem:(CPMenuItem)aMenuItem
{
return [[self menu] indexOfItem:aMenuItem];
}
/*!
Returns the index of the item with the specified tag or CPNotFound if the item is not in the list.
@param aTag the item's tag
*/
- (int)indexOfItemWithTag:(int)aTag
{
return [[self menu] indexOfItemWithTag:aTag];
}
/*!
Returns the index of the item with the specified title or CPNotFound.
@param aTitle the item's title
*/
- (int)indexOfItemWithTitle:(CPString)aTitle
{
return [[self menu] indexOfItemWithTitle:aTitle];
}
/*!
Returns the index of the item with the specified
represented object or CPNotFound
if a match does not exist.
@param anObject the item's represented object
*/
- (int)indexOfItemWithRepresentedObject:(id)anObject
{
return [[self menu] indexOfItemWithRepresentedObject:anObject];
}
/*!
Returns the index of the item with the specified target
and action. Returns CPNotFound if the no
such item is in the list.
@param aTarget the item's target
@param anAction the item's action
*/
- (int)indexOfItemWithTarget:(id)aTarget action:(SEL)anAction
{
return [[self menu] indexOfItemWithTarget:aTarget action:anAction];
}
// Setting the Cell Edge to Pop out in Restricted Situations
/*!
Returns the button's edge where the pop-up menu will be
displayed when there is not enough room to display directly
above the button.
*/
- (CPRectEdge)preferredEdge
{
return _preferredEdge;
}
/*!
Sets the preferred edge of the button to display the
pop-up when there is a limited amount of screen space.
By default, the pop-up should draw on top of the button.
*/
- (void)setPreferredEdge:(CPRectEdge)aRectEdge
{
_preferredEdge = aRectEdge;
}
// Setting the Title
/*!
Sets the pop-up button's title.
@param aTitle the new title
*/
- (void)setTitle:(CPString)aTitle
{
if ([self title] === aTitle)
return;
if ([self pullsDown])
{
var items = [[self menu] itemArray];
if ([items count] <= 0)
[self addItemWithTitle:aTitle];
else
{
[items[0] setTitle:aTitle];
[self synchronizeTitleAndSelectedItem];
}
}
else
{
var index = [self indexOfItemWithTitle:aTitle];
if (index < 0)
{
[self addItemWithTitle:aTitle];
index = [self numberOfItems] - 1;
}
[self selectItemAtIndex:index];
}
}
// Setting the Image
/*!
This method has no effect. Because the image is taken
from the currently selected item, this method serves
no purpose.
*/
- (void)setImage:(CPImage)anImage
{
// The Image is set by the currently selected item.
}
// Setting the State
/*!
Makes sure the selected item and the item
being displayed are one and the same.
*/
- (void)synchronizeTitleAndSelectedItem
{
var item = nil;
if ([self pullsDown])
{
var items = [[self menu] itemArray];
if ([items count] > 0)
item = items[0];
}
else
item = [self selectedItem];
[super setImage:[item image]];
[super setTitle:[item title]];
}
- (void)observeValueForKeyPath:(CPString)aKeyPath ofObject:(id)anObject change:(CPDictionary)changes context:(id)aContext
{
var pullsDown = [self pullsDown];
if (!pullsDown && aKeyPath === @"selectedItem.changeCount" ||
pullsDown && (aKeyPath === @"_firstItem" || aKeyPath === @"_firstItem.changeCount"))
[self synchronizeTitleAndSelectedItem];
// FIXME: This is due to a bug in KVO, we should never get it for "menu".
if (aKeyPath === @"menu")
{
aKeyPath = @"menu.items";
[changes setObject:CPKeyValueChangeSetting forKey:CPKeyValueChangeKindKey];
[changes setObject:[[self menu] itemArray] forKey:CPKeyValueChangeNewKey];
}
if (aKeyPath === @"menu.items")
{
var changeKind = [changes objectForKey:CPKeyValueChangeKindKey],
indexOfSelectedItem = [self indexOfSelectedItem];
if (changeKind === CPKeyValueChangeRemoval)
{
var index = CPNotFound,
indexes = [changes objectForKey:CPKeyValueChangeIndexesKey];
if ([indexes containsIndex:0] && [self pullsDown])
[self _firstItemDidChange];
if (![self pullsDown] && [indexes containsIndex:indexOfSelectedItem])
{
// If the selected item is removed the first item becomes selected.
indexOfSelectedItem = 0;
}
else
{
// See whether the index has changed, despite the actual item not changing.
while ((index = [indexes indexGreaterThanIndex:index]) !== CPNotFound &&
index <= indexOfSelectedItem)
--indexOfSelectedItem;
}
[self selectItemAtIndex:indexOfSelectedItem];
}
else if (changeKind === CPKeyValueChangeReplacement)
{
var indexes = [changes objectForKey:CPKeyValueChangeIndexesKey];
if (pullsDown && [indexes containsIndex:0] ||
!pullsDown && [indexes containsIndex:indexOfSelectedItem])
[self synchronizeTitleAndSelectedItem];
}
else
{
// No matter what, we want to prepare the new items.
var newItems = [changes objectForKey:CPKeyValueChangeNewKey];
[newItems enumerateObjectsUsingBlock:function(aMenuItem)
{
var action = [aMenuItem action];
if (!action)
[aMenuItem setAction:action = @selector(_popUpItemAction:)];
if (action === @selector(_popUpItemAction:))
[aMenuItem setTarget:self];
}];
if (changeKind === CPKeyValueChangeSetting)
{
[self _firstItemDidChange];
[self selectItemAtIndex:CPNotFound];
[self selectItemAtIndex:MIN([newItems count] - 1, indexOfSelectedItem)];
}
else //if (changeKind === CPKeyValueChangeInsertion)
{
var indexes = [changes objectForKey:CPKeyValueChangeIndexesKey];
if ([self pullsDown] && [indexes containsIndex:0])
{
[self _firstItemDidChange];
if ([self numberOfItems] > 1)
{
var index = CPNotFound,
originalIndex = 0;
while ((index = [indexes indexGreaterThanIndex:index]) !== CPNotFound &&
index <= originalIndex)
++originalIndex;
[[self itemAtIndex:originalIndex] setHidden:NO];
}
}
if (indexOfSelectedItem < 0)
[self selectItemAtIndex:0];
else
{
var index = CPNotFound;
// See whether the index has changed, despite the actual item not changing.
while ((index = [indexes indexGreaterThanIndex:index]) !== CPNotFound &&
index <= indexOfSelectedItem)
++indexOfSelectedItem;
[self selectItemAtIndex:indexOfSelectedItem];
}
}
}
}
// [super observeValueForKeyPath:aKeyPath ofObject:anObject change:changes context:aContext];
}
- (void)mouseDown:(CPEvent)anEvent
{
if (![self isEnabled] || ![self numberOfItems])
return;
[self highlight:YES];
var menu = [self menu],
bounds = [self bounds],
minimumWidth = CGRectGetWidth(bounds);
// FIXME: setFont: should set the font on the menu.
[menu setFont:[self font]];
if ([self pullsDown])
{
var positionedItem = nil,
location = CGPointMake(0.0, CGRectGetMaxY(bounds));
}
else
{
var contentRect = [self contentRectForBounds:bounds],
positionedItem = [self selectedItem],
standardLeftMargin = [_CPMenuWindow _standardLeftMargin] + [_CPMenuItemStandardView _standardLeftMargin],
location = CGPointMake(CGRectGetMinX(contentRect) - standardLeftMargin, 0.0);
minimumWidth += standardLeftMargin;
// To ensure the selected item is highlighted correctly, unset the highlighted item
[menu _highlightItemAtIndex:CPNotFound];
}
[menu setMinimumWidth:minimumWidth];
[menu
_popUpMenuPositioningItem:positionedItem
atLocation:location
topY:CGRectGetMinY(bounds)
bottomY:CGRectGetMaxY(bounds)
inView:self
callback:function(aMenu)
{
[self highlight:NO];
var highlightedItem = [aMenu highlightedItem];
if ([highlightedItem _isSelectable])
[self selectItem:highlightedItem];
}];
/*
else
{
// This is confusing, I KNOW, so let me explain it to you.
// We want the *content* of the selected menu item to overlap the *content* of our pop up.
// 1. So calculate where our content is, then calculate where the menu item is.
// 2. Move LEFT by whatever indentation we have (offsetWidths, aka, window margin, item margin, etc).
// 3. MOVE UP by the difference in sizes of the content and menu item, this will only work if the content is vertically centered.
var contentRect = [self convertRect:[self contentRectForBounds:bounds] toView:nil],
menuOrigin = [theWindow convertBaseToGlobal:contentRect.origin],
menuItemRect = [menuWindow rectForItemAtIndex:_selectedIndex];
menuOrigin.x -= CGRectGetMinX(menuItemRect) + [menuWindow overlapOffsetWidth] + [[[menu itemAtIndex:_selectedIndex] _menuItemView] overlapOffsetWidth];
menuOrigin.y -= CGRectGetMinY(menuItemRect) + (CGRectGetHeight(menuItemRect) - CGRectGetHeight(contentRect)) / 2.0;
}
*/
}
- (void)rightMouseDown:(CPEvent)anEvent
{
// Disable standard CPView behavior which incorrectly displays the menu as a 'context menu'.
}
- (void)_popUpItemAction:(id)aSender
{
[self sendAction:[self action] to:[self target]];
}
- (void)_firstItemDidChange
{
[self willChangeValueForKey:@"_firstItem"];
[self didChangeValueForKey:@"_firstItem"];
[[self _firstItem] setHidden:YES];
}
- (CPMenuItem)_firstItem
{
if ([self numberOfItems] <= 0)
return nil;
return [[self menu] itemAtIndex:0];
}
- (void)takeValueFromKeyPath:(CPString)aKeyPath ofObjects:(CPArray)objects
{
var count = objects.length,
value = [objects[0] valueForKeyPath:aKeyPath];
[self selectItemWithTag:value];
[self setEnabled:YES];
while (count-- > 1)
if (value !== [objects[count] valueForKeyPath:aKeyPath])
[[self selectedItem] setState:CPOffState];
}
- (void)_reverseSetBinding
{
[_CPPopUpButtonSelectionBinder reverseSetValueForObject:self];
[super _reverseSetBinding];
}
@end
@implementation CPPopUpButton (BindingSupport)
+ (Class)_binderClassForBinding:(CPString)aBinding
{
if (aBinding == CPSelectedIndexBinding ||
aBinding == CPSelectedObjectBinding ||
aBinding == CPSelectedTagBinding ||
aBinding == CPSelectedValueBinding ||
aBinding == CPContentBinding ||
aBinding == CPContentObjectsBinding ||
aBinding == CPContentValuesBinding)
{
var capitalizedBinding = aBinding.charAt(0).toUpperCase() + aBinding.substr(1);
return [CPClassFromString(@"_CPPopUpButton" + capitalizedBinding + "Binder") class];
}
return [super _binderClassForBinding:aBinding];
}
@end
@implementation _CPPopUpButtonContentBinder : CPBinder
{
}
- (CPInteger)_getInsertNullOffset
{
var options = [_info objectForKey:CPOptionsKey];
return [options objectForKey:CPInsertsNullPlaceholderBindingOption] ? 1 : 0;
}
- (CPString)_getNullPlaceholder
{
var options = [_info objectForKey:CPOptionsKey],
placeholder = [options objectForKey:CPNullPlaceholderBindingOption] || @"";
if (placeholder === [CPNull null])
placeholder = @"";
return placeholder;
}
- (id)transformValue:(CPArray)contentArray withOptions:(CPDictionary)options
{
// Desactivate the full array transformation forced by super because we don't want this. We want individual transformations (see below).
return contentArray;
}
- (void)setValue:(CPArray)contentArray forBinding:(CPString)aBinding
{
[self _setContent:contentArray];
[self _setContentValuesIfNeeded:contentArray];
}
- (void)valueForBinding:(CPString)aBinding
{
return [self _content];
}
- (void)_setContent:(CPArray)aValue
{
var count = [aValue count],
options = [_info objectForKey:CPOptionsKey],
offset = [self _getInsertNullOffset];
if (count + offset != [_source numberOfItems])
{
[_source removeAllItems];
if (offset)
[_source addItemWithTitle:[self _getNullPlaceholder]];
for (var i = 0; i < count; i++)
{
var item = [[CPMenuItem alloc] initWithTitle:@"" action:NULL keyEquivalent:nil];
[self _setValue:[aValue objectAtIndex:i] forItem:item withOptions:options];
[_source addItem:item];
}
}
else
{
for (var i = 0; i < count; i++)
{
[self _setValue:[aValue objectAtIndex:i] forItem:[_source itemAtIndex:i + offset] withOptions:options];
}
}
}
- (void)_setContentValuesIfNeeded:(CPArray)values
{
var offset = [self _getInsertNullOffset];
if (![_source infoForBinding:CPContentValuesBinding])
{
if (offset)
[[_source itemAtIndex:0] setTitle:[self _getNullPlaceholder]];
var count = [values count];
for (var i = 0; i < count; i++)
[[_source itemAtIndex:i + offset] setTitle:[[values objectAtIndex:i] description]];
}
}
- (void)_setValue:(id)aValue forItem:(CPMenuItem)aMenuItem withOptions:(CPDictionary)options
{
var value = [self _transformValue:aValue withOptions:options];
[aMenuItem setRepresentedObject:value];
}
- (id)_transformValue:(id)aValue withOptions:(CPDictionary)options
{
return [super transformValue:aValue withOptions:options];
}
- (CPArray)_content
{
return [_source valueForKeyPath:@"itemArray.representedObject"];
}
@end
@implementation _CPPopUpButtonContentValuesBinder : _CPPopUpButtonContentBinder
{
}
- (void)setValue:(id)aValue forBinding:(CPString)aBinding
{
[super _setContent:aValue];
}
- (void)_setValue:(id)aValue forItem:(CPMenuItem)aMenuItem withOptions:(CPDictionary)options
{
if (aValue === [CPNull null])
aValue = nil;
var value = [self _transformValue:aValue withOptions:options];
[aMenuItem setTitle:value];
}
- (CPArray)_content
{
return [_source valueForKeyPath:@"itemArray.title"];
}
@end
var binderForObject = {};
@implementation _CPPopUpButtonSelectionBinder : CPBinder
{
CPString _selectionBinding @accessors;
}
- (id)initWithBinding:(CPString)aBinding name:(CPString)aName to:(id)aDestination keyPath:(CPString)aKeyPath options:(CPDictionary)options from:(id)aSource
{
self = [super initWithBinding:aBinding name:aName to:aDestination keyPath:aKeyPath options:options from:aSource];
if (self)
{
binderForObject[[aSource UID]] = self;
_selectionBinding = aName;
}
return self;
}
+ (void)reverseSetValueForObject:(id)aSource
{
var binder = binderForObject[[aSource UID]];
[binder reverseSetValueFor:[binder _selectionBinding]];
}
- (void)setPlaceholderValue:(id)aValue withMarker:(CPString)aMarker forBinding:(CPString)aBinding
{
[self setValue:aValue forBinding:aBinding];
}
- (CPInteger)_getInsertNullOffset
{
var options = [[CPBinder infoForBinding:CPContentBinding forObject:_source] objectForKey:CPOptionsKey];
return [options objectForKey:CPInsertsNullPlaceholderBindingOption] ? 1 : 0;
}
@end
@implementation _CPPopUpButtonSelectedIndexBinder : _CPPopUpButtonSelectionBinder
{
}
- (void)setValue:(id)aValue forBinding:(CPString)aBinding
{
[_source selectItemAtIndex:aValue + [self _getInsertNullOffset]];
}
- (id)valueForBinding:(CPString)aBinding
{
return [_source indexOfSelectedItem] - [self _getInsertNullOffset];
}
@end
@implementation _CPPopUpButtonSelectedObjectBinder : _CPPopUpButtonSelectionBinder
{
}
- (void)setValue:(id)aValue forBinding:(CPString)aBinding
{
var index = [_source indexOfItemWithRepresentedObject:aValue],
offset = [self _getInsertNullOffset];
// If the content binding has the option CPNullPlaceholderBindingOption and the object to select is nil, select the first item (i.e., the placeholder).
// Other cases to consider:
// 1. no binding:
// 1.1 there's no item with a represented object matching the object to select.
// 1.2 the object to select is nil/CPNull
// 2. there's a binding:
// 2.1 there's a CPNullPlaceholderBindingOption:
// 2.1.1 there's no item with a represented object matching the object to select?
// 2.1.2 the object to select is nil/CPNull
// 2.2 there's no CPNullPlaceholderBindingOption:
// 2.2.1 there's no item with a represented object matching the object to select?
// 2.2.2 the object to select is nil/CPNull
// More cases? Behaviour that depends on array controller settings?
if (offset === 1 && index === CPNotFound)
index = 0;
[_source selectItemAtIndex:index];
}
- (id)valueForBinding:(CPString)aBinding
{
return [[_source selectedItem] representedObject];
}
@end
@implementation _CPPopUpButtonSelectedTagBinder : _CPPopUpButtonSelectionBinder
{
}
- (void)setValue:(id)aValue forBinding:(CPString)aBinding
{
[_source selectItemWithTag:aValue];
}
- (id)valueForBinding:(CPString)aBinding
{
return [[_source selectedItem] tag];
}
@end
@implementation _CPPopUpButtonSelectedValueBinder : _CPPopUpButtonSelectionBinder
{
}
- (void)setValue:(id)aValue forBinding:(CPString)aBinding
{
[_source selectItemWithTitle:aValue];
}
- (id)valueForBinding:(CPString)aBinding
{
return [_source titleOfSelectedItem];
}
@end
var DEPRECATED_CPPopUpButtonMenuKey = @"CPPopUpButtonMenuKey",
DEPRECATED_CPPopUpButtonSelectedIndexKey = @"CPPopUpButtonSelectedIndexKey";
@implementation CPPopUpButton (CPCoding)
/*!
Initializes the pop-up button with data from the
specified coder.
@param aCoder the coder from which to read
the data
@return the initialized pop-up button
*/
- (id)initWithCoder:(CPCoder)aCoder
{
self = [super initWithCoder:aCoder];
if (self)
{
// FIXME: (or not?) _title is nulled in - [CPButton initWithCoder:],
// so we need to do this again.
[self synchronizeTitleAndSelectedItem];
// FIXME: Remove deprecation leniency for 1.0
if ([aCoder containsValueForKey:DEPRECATED_CPPopUpButtonMenuKey])
{
CPLog.warn(self + " was encoded with an older version of Cappuccino. Please nib2cib the original nib again or open and re-save in Atlas.");
[self setMenu:[aCoder decodeObjectForKey:DEPRECATED_CPPopUpButtonMenuKey]];
[self setObjectValue:[aCoder decodeObjectForKey:DEPRECATED_CPPopUpButtonSelectedIndexKey]];
}
var options = CPKeyValueObservingOptionNew | CPKeyValueObservingOptionOld;/* | CPKeyValueObservingOptionInitial */
[self addObserver:self forKeyPath:@"menu.items" options:options context:nil];
[self addObserver:self forKeyPath:@"_firstItem.changeCount" options:options context:nil];
[self addObserver:self forKeyPath:@"selectedItem.changeCount" options:options context:nil];
}
return self;
}
@end
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