menubar.java

j2me polish学习的经典代码

		//#endif
		}
	}

	//#ifdef polish.useDynamicStyles	
	/* (non-Javadoc)
	 * @see de.enough.polish.ui.Item#createCssSelector()
	 */
	protected String createCssSelector() {
		return "menubar";
	}
	//#endif
	
	/**
	 * Used to toggle the opened state of the menu bar
	 * 
	 * @param open true when the menu should be opened
	 */
	protected void setOpen( boolean open ) {
		this.isInitialised = (open == this.isOpened);
		if (!open && this.isOpened) {
			this.commandsContainer.hideNotify();
		} else if (open && !this.isOpened) {
			//#if !polish.MenuBar.focusFirstAfterClose
				// focus the first item again, so when the user opens the menu again, it will be "fresh" again
				this.commandsContainer.focus(0);
			//#endif
			this.commandsContainer.showNotify();
		}
		this.isOpened = open;
		this.isInitialised = false;
	}
	


	protected boolean handleKeyPressed(int keyCode, int gameAction) {
		//#debug
		System.out.println("MenuBar: handleKeyPressed(" + keyCode + ", " + gameAction  );
		this.isSoftKeyPressed = false;
		if (this.isOpened) {
			if (keyCode == this.selectOptionsMenuKey) {
				this.isSoftKeyPressed = true;			
				CommandItem commandItem = (CommandItem) this.commandsContainer.getFocusedItem();
				//#if tmp.useInvisibleMenuBar
					if (commandItem.command == this.hideCommand ) {
						setOpen( false );
						return true;
					}
					//TODO find a way how to handle the hide command on BlackBerry when it is invoked directly...
				//#endif
				commandItem.handleKeyPressed( 0, Canvas.FIRE );
	//			boolean handled = commandItem.handleKeyPressed( 0, Canvas.FIRE );
	//			if (!handled) { // CommandItem returns false when it invokes the command listener
				// this is now done automatically by the Screen class
	//				setOpen( false );
	//			}				
				return true;
			//#if polish.key.ReturnKey:defined
				//#= } else  if (keyCode == this.closeOptionsMenuKey || keyCode == ${polish.key.ReturnKey}) {
			//#else
				} else  if (keyCode == this.closeOptionsMenuKey) {
			//#endif
				this.isSoftKeyPressed = true;
				int selectedIndex = this.commandsContainer.getFocusedIndex();
				if (!this.commandsContainer.handleKeyPressed(0, Canvas.LEFT)
						|| selectedIndex != this.commandsContainer.getFocusedIndex() ) 
				{
					setOpen( false );
				}
				//System.out.println("MenuBar is closing due to key " + keyCode);
				return true;
			} else {
				if (keyCode != 0) {
					gameAction = this.screen.getGameAction(keyCode);
				}
				//#if tmp.useInvisibleMenuBar
					// handle hide command specifically:
					if (  gameAction == Canvas.FIRE && ((CommandItem)this.commandsContainer.focusedItem).command == this.hideCommand ) {
						setOpen( false );
						return true;
					}
				//#endif
//				if (gameAction == Canvas.FIRE) {
//					int focusedIndex = this.commandsContainer.focusedIndex;
//					Command command = (Command) this.commandsList.get(focusedIndex);
//					setOpen( false );
//					this.screen.callCommandListener(command);
//					return true;
//				}
				boolean handled = this.commandsContainer.handleKeyPressed(keyCode, gameAction);
				if (handled) {
					this.isInitialised = false;
				} else { 
					if (gameAction == Canvas.DOWN || gameAction == Canvas.UP) {
						//#debug error
						System.out.println("Container DID NOT HANDLE DOWN OR UP, selectedIndex=" + this.commandsContainer.getFocusedIndex() + ", count="+ this.commandsContainer.size() );
					}
					setOpen( false );
				}
				return handled;				
			}
		} else {
			if (keyCode == LEFT_SOFT_KEY && this.singleLeftCommand != null) {
				this.isSoftKeyPressed = true;			
				this.screen.callCommandListener(this.singleLeftCommand);
				return true;			
			} else if (keyCode == RIGHT_SOFT_KEY && this.singleRightCommand != null) {
				this.isSoftKeyPressed = true;			
				this.screen.callCommandListener(this.singleRightCommand);
				return true;			
			} else if (keyCode == this.openOptionsMenuKey ) {
				this.isSoftKeyPressed = true;			
				//#if tmp.useInvisibleMenuBar
					if ( !this.isOpened && this.positiveCommand != null 
							&& ((this.singleRightCommand != null && this.commandsContainer.size() == 3)
							|| (this.singleRightCommand == null && this.commandsContainer.size() == 2)) ) 
					{
						// invoke positive command:
						this.screen.callCommandListener(this.positiveCommand);
						return true;
					} else 
				//#endif
				if (this.commandsList.size() > 0) {
					setOpen( true );
					return true;
				}
			}
		}
		return false;
	}
	
	//#ifdef polish.hasPointerEvents
	protected boolean handlePointerPressed(int x, int y) {
		// check if one of the command buttons has been pressed:
		int leftCommandEndX = this.marginLeft + this.paddingLeft + this.singleLeftCommandItem.itemWidth;
		int rightCommandStartX = this.screen.screenWidth - (this.marginRight + this.paddingRight + this.singleRightCommandItem.itemWidth);
		//System.out.println("MenuBar: handlePointerPressed( x=" + x + ", y=" + y + " )\nleftCommandEndX = " + leftCommandEndX + ", rightCommandStartXs = " + rightCommandStartX + " screenHeight=" + this.screen.screenHeight);
		if (y > this.screen.screenHeight) {
			//System.out.println("menubar clicked");
			boolean isCloseKeySelected;
			boolean isOpenKeySelected;
			
			//#if tmp.RightOptions
				isCloseKeySelected = x > rightCommandStartX;
				isOpenKeySelected =  x < leftCommandEndX;
			//#else
				isCloseKeySelected = x < leftCommandEndX;
				isOpenKeySelected = x > rightCommandStartX;
			//#endif
			if (this.isOpened) {
				if ( isCloseKeySelected ) {
					//System.out.println("selecting command from opened menu");
					setOpen( false );
					Command command = (Command) this.commandsList.get( this.commandsContainer.focusedIndex );
					this.screen.callCommandListener(command);
				} else if ( isOpenKeySelected ) {
					//System.out.println("closing menu");
					setOpen( false );
				}
			} else if (this.singleLeftCommand != null 
					&& x < leftCommandEndX) 
			{
				//System.out.println("calling single left command");
				this.screen.callCommandListener(this.singleLeftCommand);
			} else if (this.singleRightCommand != null
					&& x > rightCommandStartX) 
			{
				//System.out.println("calling single right command");
				this.screen.callCommandListener(this.singleRightCommand);
			} else if (this.commandsList.size() > 0 
					&& x < leftCommandEndX)
			{
				//System.out.println("opening menu");
				setOpen( true );
			}
			//System.out.println("nothing was clicked...");
			return true;
		// okay, y is above the menu bar, so let the commandContainer process the event:
		} else if (this.isOpened) {
			y -= this.commandsContainerY;
			boolean handled = this.commandsContainer.handlePointerPressed(x, y);
			return handled;
//			setOpen( false );
//			// a menu-item could have been selected:
//			if (x <= this.commandsContainer.xLeftPos + this.commandsContainerWidth 
//					&& y >= this.commandsContainerY ) 
//			{
//				
//				//boolean handled = this.commandsContainer.handlePointerPressed( x, y );
//				//System.out.println("handling pointer pressed in open menu at " + x + ", " + y + ": " + handled);
//				this.commandsContainer.handlePointerPressed( x, y );
//				int focusedIndex = this.commandsContainer.getFocusedIndex();
//				Command cmd = (Command) this.commandsList.get( focusedIndex );
//				this.screen.callCommandListener( cmd );						
//				return true;
//			}
		}
		return false;
	}
	//#endif
	
	
	public void setStyle(Style style) {
		//#if !polish.Bugs.noTranslucencyWithDrawRgb
			if (this.overlayBackground == null) {
				//#if polish.color.overlay:defined
					int color = 0;
					//#= color =  ${polish.color.overlay};
					if ((color & 0xFF000000) != 0) {
						this.overlayBackground = new TranslucentSimpleBackground( color );
					}
				//#else
					this.overlayBackground = new TranslucentSimpleBackground( 0xAA000000 );
				//#endif
	
			}
		//#endif
		//#if tmp.useInvisibleMenuBar
			this.background = null;
			this.border = null;
		//#else
			super.setStyle(style);
			
			//#ifdef polish.css.menubar-show-image-and-text
				Boolean showImageAndTextBool = style.getBooleanProperty( "menubar-show-image-and-text" );
				if (showImageAndTextBool != null) {
					this.showImageAndText = showImageAndTextBool.booleanValue();
				}
			//#endif
			//#ifdef polish.css.menubar-options-image
				String optionsUrl = style.getProperty("menubar-options-image");
				if (optionsUrl != null) {
					try {
						this.optionsImage = StyleSheet.getImage(optionsUrl, this, false);
						int imageHeight = this.optionsImage.getHeight();
						if (imageHeight > this.contentHeight) {
							this.contentHeight = imageHeight;
						}
					} catch (IOException e) {
						//#debug error
						System.out.println("Unable to load options-image " + optionsUrl + e );
					}
				}
			//#endif
			//#ifdef polish.css.menubar-select-image
				String selectUrl = style.getProperty("menubar-select-image");
				if (selectUrl != null) {
					try {
						this.selectImage = StyleSheet.getImage(selectUrl, this, false);
						int imageHeight = this.selectImage.getHeight();
						if (imageHeight > this.contentHeight) {
							this.contentHeight = imageHeight;
						}
					} catch (IOException e) {
						//#debug error
						System.out.println("Unable to load select-image " + selectUrl + e );
					}
				}
			//#endif
			//#ifdef polish.css.menubar-cancel-image
				String cancelUrl = style.getProperty("menubar-cancel-image");
				if (cancelUrl != null) {
					try {
						this.cancelImage = StyleSheet.getImage(cancelUrl, this, false);
						int imageHeight = this.cancelImage.getHeight();
						if (imageHeight > this.contentHeight) {
							this.contentHeight = imageHeight;
						}
					} catch (IOException e) {
						//#debug error
						System.out.println("Unable to load cancel-image " + cancelUrl + e );
					}
				}
			//#endif
		//#endif
	}
	
	
	public boolean animate() {
		boolean animated = false;
		if (this.background != null) {
			animated = animated | this.background.animate();
		}
		if (this.isOpened) {
			animated = animated | this.commandsContainer.animate();
		}
		if (this.singleLeftCommandItem != null) {
			animated = animated | this.singleLeftCommandItem.animate();
		}
		if (this.singleRightCommandItem != null) {
			animated = animated | this.singleRightCommandItem.animate();
		}
		return animated;
	}

	/**
	 * Adds the given command as a subcommand to the specified parent command.
	 * 
	 * @param parentCommand the parent command
	 * @param childCommand the child command
	 * @param commandStyle the style for the command
	 * @throws IllegalStateException when the parent command has not be added before
	 */
	public void addSubCommand(Command childCommand, Command parentCommand, Style commandStyle) {
        //#if tmp.useInvisibleMenuBar
	        if (parentCommand == this.positiveCommand) {
	            this.positiveCommand = null;
	        }
	    //#endif
		// find parent CommandItem, could be tricky, especially when there are nested commands over several layers
		int index = this.commandsList.indexOf( parentCommand );
		CommandItem parentCommandItem = null;
		if (index != -1) {
			// found it:
			parentCommandItem = (CommandItem) this.commandsContainer.get( index );
		} else if (parentCommand == this.singleLeftCommand ){
			parentCommandItem = new CommandItem( parentCommand, this );
			this.commandsContainer.add( parentCommandItem );
			this.commandsList.add( parentCommand );
			this.singleLeftCommand = null;
		} else if (parentCommand == this.singleRightCommand ){
			parentCommandItem = new CommandItem( parentCommand, this );
			this.commandsContainer.add( parentCommandItem );
			this.commandsList.add( parentCommand );
			this.singleRightCommand = null;
		} else {
			// search through all commands
			for ( int i=0; i < this.commandsContainer.size(); i++ ) {
				CommandItem item = (CommandItem) this.commandsContainer.get( i );
				parentCommandItem = item.getChild( parentCommand );
				if ( parentCommandItem != null ) {
					break;
				}
			}
		}
		if ( parentCommandItem == null ) {
			throw new IllegalStateException();
		}
		parentCommandItem.addChild( childCommand, commandStyle );
		if (this.isOpened) {
			this.isInitialised = false;
			repaint();
		}
	}

	/**
	 * Removes all commands from this MenuBar.
	 * This option is only available when the "menu" fullscreen mode is activated.
	 */
	public void removeAllCommands() {
		this.commands.clear();
		this.commandsContainer.clear();
	}

	
	
	
//#ifdef polish.MenuBar.additionalMethods:defined
	//#include ${polish.MenuBar.additionalMethods}
//#endif

}