/**
    * Copyright (C) 2008 Atlassian
    * 
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * 
    *    http://www.apache.org/licenses/LICENSE-2.0
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.atlassian.theplugin.idea;
  
  import com.atlassian.theplugin.commons.exception.ThePluginException;
  import thirdparty.javaworld.ClasspathHTMLEditorKit;
  import com.intellij.openapi.util.IconLoader;
  
  import javax.swing.*;
  import javax.swing.event.MouseInputAdapter;
  import java.awt.*;
  import java.awt.event.MouseAdapter;
  import java.awt.event.MouseEvent;
  import java.awt.event.WindowAdapter;
  import java.awt.event.WindowEvent;
  
  public class PluginStatusBarToolTip extends Window {
  
      // htmlView panel shows HTML content
      private final JEditorPane htmlView = new JEditorPane();
  
      // title bar of the tooltip
      private final ToolTipTitleBar titleBar;
  
      private static final int INITIAL_SIZE_X = 400;
      private static final int INITIAL_SIZE_Y = 200;
      private static final int SIZE_TITLE_BAR_Y = 260;
      private static final Color BACKGROUND_COLOR = new Color(253, 254, 226);
  	private JScrollPane scrollPane;
  
  	public PluginStatusBarToolTip(JFrame frame) {
  
  		super(frame);
  
  		// html view is the main view of the tooltip
          htmlView.setEditable(false);
          htmlView.setContentType("text/html");
          htmlView.setBackground(BACKGROUND_COLOR);
  		htmlView.addHyperlinkListener(new GenericHyperlinkListener());
          htmlView.setEditorKit(new ClasspathHTMLEditorKit());
          // title bar of the tooltip
          try {
              titleBar = new ToolTipTitleBar(this);
          } catch (ThePluginException e) {
              throw new RuntimeException(e);
          }
          titleBar.setTitle(" " + "Bamboo builds status");
          titleBar.setSize(INITIAL_SIZE_X, SIZE_TITLE_BAR_Y);
          titleBar.setMaximumSize(new Dimension(INITIAL_SIZE_X, SIZE_TITLE_BAR_Y));
          titleBar.setMinimumSize(new Dimension(INITIAL_SIZE_X, SIZE_TITLE_BAR_Y));
  
  		// add scroll facility to the html area
  		scrollPane = new JScrollPane(htmlView,
  				JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  		scrollPane.setWheelScrollingEnabled(true);
  
  		// put components on the main window
  		this.setSize(INITIAL_SIZE_X, INITIAL_SIZE_Y);
          this.setLayout(new BorderLayout());
          this.add(titleBar, BorderLayout.NORTH);
  		this.add(scrollPane, BorderLayout.CENTER);
  
  		// hide tooltip when focus lost
  		this.addWindowFocusListener(new WindowAdapter() {
  			public void windowLostFocus(WindowEvent e) {
  				setVisible(false);
  			}
  		});
  
  		// pas key events to main window
  //		this.addKeyListener(new KeyAdapter() {
  //			public void keyTyped(KeyEvent e) {
  //
  //				e.setSource(PluginStatusBarToolTip.this.getOwner());
  //				java.awt.Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(e);
  //				PluginStatusBarToolTip.this.getOwner().dispatchEvent(e);
  //			}
  //		});
  	}
  
  	/**
       * Shows tooltip in the place where mouse pointer is located.
       *
       * @param xMouse current horizontal position of the mouse pointer (x of right-bottom corner of the tooltip)
       * @param yMouse current vertical position of the mouse pointer (y of right-bottom corner of the tooltip)
      */
     public void showToltip(int xMouse, int yMouse) {
 
 
 		int startX = xMouse - (int) this.getSize().getWidth();
 		int startY = yMouse - (int) this.getSize().getHeight();
 
 		if (startX < 0) {
 			startX = xMouse;
 		}
 
 		if (startY < 0) {
 			startY = yMouse;
 		}
 
 		this.setLocation(startX, startY);
 
 		this.setVisible(true);
         this.requestFocus();
 		this.toFront();
 	}
 
 //	/**
 //	 * Shows tooltip in the place where was visible before
 //	 */
 //	public void showTooltip() {
 //		this.setVisible(true);
 //        this.requestFocus();
 //		this.toFront();
 //	}
 //
 //	/**
 //	 * Hides tooltip
 //	 */
 //	public void hideTooltip() {
 //		this.setVisible(false);
 //	}
 
 	public void setHtmlContent(String html) {
         htmlView.setText(html);
 		//scrollPane.getVerticalScrollBar().setValue(0);
 		// move scroll bar to the top
 		htmlView.setCaretPosition(0);
 	}
 
 	private static class ToolTipTitleBar extends JPanel {
 
         private Icon closeButtonIcon = IconLoader.getIcon("/icons/close_icon_30x15.png");
         private Icon closeButtonIconHover = IconLoader.getIcon("/icons/close_icon_30x15_hover.png");
 
 		// resize label
 		private final JLabel resizeLabel = new JLabel(" ");
 		// title label
         private final GradientLabel titleLabel = new GradientLabel();
         // close icon container (top-right corner)
         private final JLabel closeIconLabel = new JLabel();
         // reference to the main tooltip window
         private PluginStatusBarToolTip tooltipWindow;
 
         /**
          * Creates titlebar in the tooltip with title and close button (icon).
          *
          * @param window reference to the main tooltip window to hide when close button clicked
          */
         ToolTipTitleBar(PluginStatusBarToolTip window) throws ThePluginException {
 
             if (window == null) {
                 throw new ThePluginException("Null tooltip window reference passed to tooltip window title bar");
             }
 
             tooltipWindow = window;
 
             closeIconLabel.setIcon(closeButtonIcon);
 
             // add resize label, title and close icon to title bar
             this.setLayout(new BorderLayout());
 			this.add(resizeLabel, BorderLayout.WEST);
 			this.add(titleLabel, BorderLayout.CENTER);
             this.add(closeIconLabel, BorderLayout.EAST);
 
             // hide tooltip when clicked on close icon
             closeIconLabel.addMouseListener(new MouseAdapter() {
                 public void mouseClicked(MouseEvent e) {
                     tooltipWindow.setVisible(false);
                 }
 
                 public void mouseEntered(MouseEvent e) {
                     closeIconLabel.setIcon(closeButtonIconHover);
                 }
 
                 public void mouseExited(MouseEvent e) {
                     closeIconLabel.setIcon(closeButtonIcon);
                 }
             });
 
             // move tooltip when draging title label
             ToolTipMoveHandler moveHandler = window.getNewMoveHandler();
             titleLabel.addMouseMotionListener(moveHandler);
             titleLabel.addMouseListener(moveHandler);
 
 			// resize tooltip
 			ToolTipResizeHandler resizeHandler = window.getNewResizeHandler();
 			resizeLabel.addMouseListener(resizeHandler);
 			resizeLabel.addMouseMotionListener(resizeHandler);
 
 		}
 
         public void setTitle(String title) {
             titleLabel.setText(title);
         }
 
 	}
 
 	private ToolTipResizeHandler getNewResizeHandler() {
 		return new ToolTipResizeHandler();
 	}
 
 	private class ToolTipResizeHandler extends MouseInputAdapter {
 		private static final int MINIMUM_X_SIZE = 200;
 		private static final int MINIMUM_Y_SIZE = 100;
 
 		private int mousePressAbsoluteX;
 		private int mousePressAbsoluteY;
 		private int initialWindowXSize;
 		private int initialWindowYSize;
 		private int initialWindowXPosition;
 		private int initialWindowYPosition;
 
 		public void mouseEntered(MouseEvent e) {
 			Cursor c = new Cursor(Cursor.NW_RESIZE_CURSOR);
 			((JComponent) e.getSource()).setCursor(c);
 		}
 
 		public void mouseDragged(MouseEvent e) {
 
 			int changedX = mousePressAbsoluteX - (int) (MouseInfo.getPointerInfo().getLocation().getX());
 			int changedY = mousePressAbsoluteY - (int) (MouseInfo.getPointerInfo().getLocation().getY());
 
 			int newXSize = initialWindowXSize + changedX;
 			int newYSize = initialWindowYSize + changedY;
 
 			if (newXSize > MINIMUM_X_SIZE) {
 				int currentYPosition = (int) PluginStatusBarToolTip.this.getLocation().getY();
 				int currentYSize = (int) PluginStatusBarToolTip.this.getSize().getHeight();
 
 				PluginStatusBarToolTip.this.setSize(
 						initialWindowXSize + changedX,
 						currentYSize);
 
 				PluginStatusBarToolTip.this.setLocation(
 						initialWindowXPosition - changedX,
 						currentYPosition);
 			}
 			if (newYSize > MINIMUM_Y_SIZE) {
 				int currentXPosition = (int) PluginStatusBarToolTip.this.getLocation().getX();
 				int currentXSize = (int) PluginStatusBarToolTip.this.getSize().getWidth();
 
 				PluginStatusBarToolTip.this.setSize(
 						currentXSize,
 						initialWindowYSize + changedY);
 
 				PluginStatusBarToolTip.this.setLocation(
 						currentXPosition,
 						initialWindowYPosition - changedY);
 			}
 		}
 
 		public void mousePressed(MouseEvent e) {
 			mousePressAbsoluteX = (int) (MouseInfo.getPointerInfo().getLocation().getX());
 			mousePressAbsoluteY = (int) (MouseInfo.getPointerInfo().getLocation().getY());
 
 			initialWindowXSize = (int) PluginStatusBarToolTip.this.getSize().getWidth();
 			initialWindowYSize = (int) PluginStatusBarToolTip.this.getSize().getHeight();
 
 			initialWindowXPosition = (int) PluginStatusBarToolTip.this.getLocation().getX();
 			initialWindowYPosition = (int) PluginStatusBarToolTip.this.getLocation().getY(); 
 		}
 	}
 
 	private ToolTipMoveHandler getNewMoveHandler() {
 		return new ToolTipMoveHandler();
 	}
 
 	private class ToolTipMoveHandler extends MouseInputAdapter {
 		private int mousePressRelativeX = 0;
 		private int mousePressRelativeY = 0;
 
 		public void mouseDragged(MouseEvent e) {
 			PluginStatusBarToolTip.this.setLocation(
 					(int) (MouseInfo.getPointerInfo().getLocation().getX() - mousePressRelativeX),
 					(int) (MouseInfo.getPointerInfo().getLocation().getY() - mousePressRelativeY));
 		}
 
 		public void mousePressed(MouseEvent e) {
 			mousePressRelativeX = e.getX();
 			mousePressRelativeY = e.getY();
 		}
 	}
 
     private static class GradientLabel extends JLabel {
 
         private static final Color TITLE_BAR_COLOR1 = new Color(218, 236, 254); //255,255,255);
         private static final Color TITLE_BAR_COLOR2 = new Color(240, 240, 240); //255,255,100);
 
         protected void paintComponent(Graphics g) {
             final Graphics2D g2 = (Graphics2D) g;
             int w = getWidth();
             int h = getHeight();
             GradientPaint gradient = new GradientPaint(0, 0, TITLE_BAR_COLOR1, w, 0, TITLE_BAR_COLOR2, false);
             g2.setPaint(gradient);
             g2.fillRect(0, 0, w, h);
 
             super.paintComponent(g);
         }
     }
 }