panel.java

来自「soure code for j2me browser」· Java 代码 · 共 832 行 · 第 1/2 页

			row = (Component)rows.elementAt(pointerPos);
			if(row.keyEvent(key)==true)
			{
				return true;
			}
		}

		int tmpPos;
		switch(key)
		{
			case Canvas.LEFT:
				if(!animateDown)
				{
					if(viewportHeight<internalHeight)
					{
						scrollCount=FireScreen.SCROLL_COUNT;
						animateUp=true;
					}
				}
				break;
			case Canvas.RIGHT:
				if(!animateUp)
				{
					if(viewportHeight<internalHeight)
					{
						scrollCount=FireScreen.SCROLL_COUNT;
						animateDown=true;
					}
				}
				break;
			case Canvas.UP:
				tmpPos = getNextTraversableComponent(pointerPos,false);
				if(tmpPos!=-1)
				{
					pointerPos=tmpPos;
					row = (Component)rows.elementAt(pointerPos);
					row.keyEvent(key);
					recalculateVecticalOffset();
					repaint=true;
				}
				else
				{ // the last selected component must remain selected, its more usable this way.
					((Component)rows.elementAt(pointerPos)).setSelected(true);
					return keyEvent(Canvas.LEFT); // scroll up
				}
				break;
			case Canvas.DOWN:
				tmpPos = getNextTraversableComponent(pointerPos,true);
				if(tmpPos!=-1)
				{
					pointerPos=tmpPos;
					row = (Component)rows.elementAt(pointerPos);
					row.keyEvent(key);
					recalculateVecticalOffset();
					repaint=true;
				}
				else
				{ 
					((Component)rows.elementAt(pointerPos)).setSelected(true);
					return keyEvent(Canvas.RIGHT); // scroll down
				}
				break;
			case Canvas.GAME_A:
				if(commandListener!=null && leftCmd!=null)
				{
					if(control.isBusyMode() && cancelCmd!=null) // in busy mode, the cancel command is shown.
					{
						commandListener.commandAction(cancelCmd,this);
						repaint=true;
					}
					else if(leftPopup==null)
					{
						
						commandListener.commandAction(leftCmd,this);
						repaint=true;
					}
					else
					{
						control.showPopup(leftPopup);
					}
				}
				break;
			case Canvas.GAME_B:
				if(!control.isBusyMode() && commandListener!=null && rightCmd!=null)
				{
					if(rightPopup==null)
					{
						commandListener.commandAction(rightCmd,this);
						repaint=true;
					}
					else
					{
						control.showPopup(rightPopup);
					}
				}
				break;
			case Canvas.FIRE:
				break;
		}
		return repaint;
	}
	
	private void recalculateVecticalOffset()
	{
		int i,tmpHeight=0;
		
		for(i=0;i<=pointerPos;++i)
		{
			tmpHeight+=((Component)rows.elementAt(i)).getHeight();
		}
		if(tmpHeight>viewportHeight)
		{
			int vo  = tmpHeight-viewportHeight;
			int diff =(verticalOffset - vo);
			if(diff<0 ||  diff>viewportHeight)
			{
				verticalOffset = vo; 
			}
		}
		else
		{
			verticalOffset=0;
		}
		scrollY =(viewportHeight*tmpHeight)/internalHeight ;
	}
	
	public void addCommand(Command c)
	{
		if(c.getCommandType()==Command.BACK)
		{
			leftCmd = c;
			leftPopup=null;
		}
		else if(c.getCommandType()==Command.CANCEL)
		{
			cancelCmd = c;
			leftPopup=null;
		}
		else
		{
			rightCmd = c;
			rightPopup=null;
		}
	}
	
	public void removeCommands()
	{
			leftCmd = null;
			leftPopup=null;
			rightCmd = null;
			rightPopup=null;
	}
	
	public void addCommand(Command popupCmd,Popup popup)
	{
		popup.setWidth(120);
		popup.setHeight(120);
		popup.validate();

		if(popupCmd.getCommandType()==Command.BACK)
		{
//			System.out.println("Setting popup to left softkey");
//			System.out.println("Width/Height: "+getWidth()+"/"+getHeight());

			leftCmd = popupCmd;
			leftPopup = popup;
			popup.setPosX(1);
			popup.setPosY(getHeight()-FireScreen.getBottomOffset()-popup.getHeight());
		}
		else
		{
//			System.out.println("Setting popup to right softkey");
//			System.out.println("Width/Height: "+getWidth()+"/"+getHeight());

			rightCmd = popupCmd;
			rightPopup=popup;
			popup.setPosX(getWidth()-FireScreen.SCROLLBAR_WIDTH-popup.getWidth()-1);
			popup.setPosY(getHeight()-FireScreen.getBottomOffset()-popup.getHeight());

		}
	}	
	
	public void setCommandListener(CommandListener l)
	{
		commandListener = l;
	}

	public String getLabel()
	{
		return labelStr;
	}

	public void setLabel(String label)
	{
		labelStr = label; // keep original string for later user (incase of a resize)
		int w = FireScreen.defaultLabelFont.stringWidth(label);
		int lw=10;
		if(FireScreen.defaultLogo!=null)
		{
			lw += FireScreen.defaultLogo.getWidth();
		}
		int max = (getWidth()-lw);
		if(w<max)
		{
			this.label = label;
			return;
		}
		// trim label to an acceptable size.
		char[] lch = label.toCharArray();
		max = max - FireScreen.defaultLabelFont.stringWidth("...");
		
		StringBuffer res = new StringBuffer();
		int sum = 0;
		for(int i =0;i<lch.length && sum<max;++i)
		{
			sum+=FireScreen.defaultLabelFont.charWidth(lch[i]);
			res.append(lch[i]);
		}
		
		this.label = res.toString()+"...";
	}


	/**
	 * Removes all components from this panel. Its does not remove the commands
	 *
	 */
	public void removeAll()
	{
		animateDown=false;
		animateUp = false;
		pointerPos=0;
		verticalOffset=0;
		internalHeight=0;
		scrollY=0;
		rows = new Vector();
	}
	

	/**
	 * Kitame an kapoio apo ta components pou fenonte ston panel einai animated.
	 * An einai kaloume tin clock() tou kathe enos animated component kai kanoume repaint
	 *
	 */
	public boolean clock()
	{
		boolean repaint=false;
		if(ticker!=null)
		{
			ticker.clock();
			repaint = true;
		}
		if(animateUp)
		{
			verticalOffset-=FireScreen.SCROLL_STEP;
			--scrollCount;
			if(verticalOffset<=0)
			{
				verticalOffset= 0;
				scrollCount=0;
				scrollY = control.getTopOffset();
			}
			if(scrollCount<=0)
			{
				animateUp=false;
			}
			return true;
		}
		if(animateDown)
		{
			verticalOffset+=FireScreen.SCROLL_STEP;
			--scrollCount;
			if(verticalOffset>internalHeight-viewportHeight)
			{
				verticalOffset= internalHeight-viewportHeight;
				scrollCount=0;
				scrollY =getHeight() - FireScreen.getBottomOffset()-FireScreen.SCROLLBAR_HEIGHT;
			}
			if(scrollCount<=0)
			{
				animateDown=false;
			}
			return true;
		}
		
		Component row;
		int ypos=0;
		int i,htmp;
		int height = getHeight();

		for(i =0 ;i<rows.size() && ypos<(verticalOffset+height);++i)
		{
			row = (Component)rows.elementAt(i);
			htmp = row.getHeight();
			if(ypos+htmp>verticalOffset)
			{ // arxizoume na zografizoume apo auto edo to row.
				if(row.isAnimated()){ row.clock();repaint=true;}
			}
			ypos +=htmp;
		}
		return repaint;
	}

	public void internalValidateEvent(Component c)
	{
		if(control!=null)
		{
			internalHeight-=c.getHeight();
			c.setWidth(getWidth()-FireScreen.SCROLLBAR_WIDTH);
			c.validate();
			internalHeight +=c.getHeight();
			control.repaint();
		}
	}
	
	public void setCurrent(Displayable d)
	{
		if(control!=null)
		{
			control.setCurrent(d);
		}
	}
	
	public void setContainerCurrent()
	{
		if(control!=null)
		{
			control.setContainerCurrent();
		}
	}
	
	/**
	 * 
	 * @see gr.bluevibe.fire.components.Component#validate()
	 */
	public void validate()
	{
		scrollY = FireScreen.getTopOffset();
		animatedChildren=false;
		// validate all components
		int w = getWidth();
		if(ticker!=null)
		{
			ticker.setWidth(w);
			ticker.validate();
		}
		internalHeight=0;
		if(leftPopup!=null)
		{
			leftPopup.setPosX(1);
			leftPopup.setPosY(getHeight()-FireScreen.getBottomOffset()-leftPopup.getHeight());
		}
		if(rightPopup!=null)
		{
			rightPopup.setPosX(getWidth()-FireScreen.SCROLLBAR_WIDTH-rightPopup.getWidth()-1);
			rightPopup.setPosY(getHeight()-FireScreen.getBottomOffset()-rightPopup.getHeight());
		}
		int wtmp = w-FireScreen.SCROLLBAR_WIDTH;
		for(int i =0 ;i <rows.size();++i)
		{
			Component c = (Component)rows.elementAt(i);
			c.setWidth(wtmp);
			c.validate();
			internalHeight +=c.getHeight();
			if(c.isAnimated())
			{
				animatedChildren=true;
			}
		}
		setLabel(labelStr); // recalculate label.
	}
	
	public boolean isAnimated()
	{
		if(ticker!=null || animatedChildren || animateDown || animateUp)
		{
			return true;
		}
		return false;
	}
	
	
	public void showAlert(String message,Image img)
	{
		alertText = new Row(img,message); // image on the left, text on the right of the alert.
		alertText.setAlignment(FireScreen.LEFT);
		alertText.setTextHpos(FireScreen.RIGHT);
		alertText.setTextVpos(FireScreen.CENTRE);
		alertText.setImageVpos(FireScreen.CENTRE);
		alertText.setImageHpos(FireScreen.LEFT);
		alertText.setBorder(true);
		alertText.setFilled(new Integer(control.getColor()));
		alertText.setColor(FireScreen.defaultTickerColor);
		alertText.setFont(FireScreen.defaultLabelFont);
		alertText.setWidth(getWidth()-FireScreen.SCROLLBAR_WIDTH-(2*FireScreen.ALERT_HORIZONTAL_OFFSET));
		alertText.setMinHeight((2*FireScreen.ALERT_VERTICAL_OFFSET));
		alertText.validate();
		alertMode=true;
		control.repaint();
	}
	
	
	public void resetPointer()
	{
		for(int i =0 ;i<rows.size();++i)
		{
			((Component)rows.elementAt(i)).setSelected(false);
		}
		pointerPos = getNextTraversableComponent(-1,true);
		if(pointerPos>-1)
		{
			Component row = ((Component)rows.elementAt(pointerPos));
			row.keyEvent(Canvas.DOWN);
		}
	}
}