WebKit Plug-in を作ってみよう。幸いな事に Xcode ではテンプレートが用意されている。これを使ってまずはプロジェクトを作成する。
自動的に必要なメソッドが書かれた NSView のサブクラスが生成される。
中身はこんな感じ。
WebkitPlugInStudyView.h
#import
@interface WebkitPlugInStudyView : NSView <WebPlugInViewFactory>
{
}
@end
WebkitPlugInStudyView.m
#import "WebkitPlugInStudyView.h"
@interface WebkitPlugInStudyView (Internal)
- (id)_initWithArguments:(NSDictionary *)arguments;
@end
@implementation WebkitPlugInStudyView
// WebPlugInViewFactory protocol
// The principal class of the plug-in bundle must implement this protocol.
+ (NSView *)plugInViewWithArguments:(NSDictionary *)newArguments
{
return [[[self alloc] _initWithArguments:newArguments] autorelease];
}
// WebPlugIn informal protocol
- (void)webPlugInInitialize
{
// This method will be only called once per instance of the plug-in object, and will be called
// before any other methods in the WebPlugIn protocol.
// You are not required to implement this method. It may safely be removed.
}
- (void)webPlugInStart
{
// The plug-in usually begins drawing, playing sounds and/or animation in this method.
// You are not required to implement this method. It may safely be removed.
}
- (void)webPlugInStop
{
// The plug-in normally stop animations/sounds in this method.
// You are not required to implement this method. It may safely be removed.
}
- (void)webPlugInDestroy
{
// Perform cleanup and prepare to be deallocated.
// You are not required to implement this method. It may safely be removed.
}
- (void)webPlugInSetIsSelected:(BOOL)isSelected
{
// This is typically used to allow the plug-in to alter its appearance when selected.
// You are not required to implement this method. It may safely be removed.
}
- (id)objectForWebScript
{
// Returns the object that exposes the plug-in's interface. The class of this object can implement
// methods from the WebScripting informal protocol.
// You are not required to implement this method. It may safely be removed.
return self;
}
@end
@implementation WebkitPlugInStudyView (Internal)
- (id)_initWithArguments:(NSDictionary *)newArguments
{
if (!(self = [super initWithFrame:NSZeroRect]))
return nil;
return self;
}
@end
次回はメソッドを確認していこう。
