ide/editor.breadcrumbs/src/org/netbeans/modules/editor/breadcrumbs/BreadCrumbComponent.java - netbeans - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you 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 org.netbeans.modules.editor.breadcrumbs;

 import java.awt.AWTEvent;
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Image;
 import java.awt.LayoutManager;
 import java.awt.Point;
 import java.awt.Toolkit;
 import java.awt.event.AWTEventListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.beans.BeanInfo;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import javax.swing.Icon;
 import javax.swing.JComponent;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.Popup;
 import javax.swing.PopupFactory;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.border.LineBorder;
 import org.netbeans.api.actions.Openable;
 import org.netbeans.editor.JumpList;
 import org.netbeans.modules.editor.breadcrumbs.spi.BreadcrumbsController;
 import org.openide.awt.HtmlRenderer;
 import org.openide.awt.HtmlRenderer.Renderer;
 import org.openide.explorer.ExplorerManager;
 import org.openide.explorer.view.ListView;
 import org.openide.explorer.view.NodeRenderer;
 import org.openide.nodes.Node;
 import org.openide.util.ImageUtilities;
 import org.openide.util.WeakListeners;

 /**
  *
  * @author lahvac
  */
 public class BreadCrumbComponent<T extends JLabel&Renderer> extends JComponent implements PropertyChangeListener {

     private final Icon SEPARATOR =
         ImageUtilities.image2Icon(ImageUtilities.loadImage("org/netbeans/modules/editor/breadcrumbs/resources/separator.png"));

     public BreadCrumbComponent() {
         setPreferredSize(new Dimension(0, COMPONENT_HEIGHT));
         addMouseListener(new MouseAdapter() {
             @Override public void mouseClicked(MouseEvent e) {
                 expand(e);
             }
         });
     }

     private static final int USABLE_HEIGHT = 19;
     private static final int LEFT_SEPARATOR_INSET = 2;
     private static final int RIGHT_SEPARATOR_INSET = 10;
     private static final int ICON_TEXT_SEPARATOR = 5;
     private static final int START_INSET = 8;
     private static final int MAX_ROWS_IN_POP_UP = 20;
     public static final int COMPONENT_HEIGHT = USABLE_HEIGHT;

     private ExplorerManager seenManager;

     private PropertyChangeListener weakPCL;

     private ExplorerManager findManager() {
         ExplorerManager manager = ExplorerManager.find(this);

         if (seenManager != manager) {
             if (seenManager != null && weakPCL != null) {
                 seenManager.removePropertyChangeListener(weakPCL);
                 weakPCL = null;
             }
             if (manager != null) {
                 weakPCL = WeakListeners.propertyChange(this, manager);
                 manager.addPropertyChangeListener(weakPCL);
             }
             seenManager = manager;
         }

         assert manager != null;

         return manager;
     }

     @Override
     protected void paintComponent(Graphics g) {
         if (nodes == null) measurePrepaint();

         assert nodes != null;

         if( "Aqua".equals(UIManager.getLookAndFeel().getID()) ) //NOI18N
             setBackground(UIManager.getColor("NbExplorerView.background")); //NOI18N

         int height = getHeight();

         if (nodes.length == 0) {
             SEPARATOR.paintIcon(this, g, START_INSET, (height - SEPARATOR.getIconHeight()) / 2);
             return ;
         }

         int x = START_INSET;

         for (int i = 0; i < nodes.length; i++) {
             configureForNode(nodes[i]);
             Dimension preferred = renderer.getPreferredSize();
             int labelY = (height - preferred.height) / 2;
             g.translate(x, labelY);
             renderer.setSize(preferred);
             renderer.paint(g);
             g.translate(-x, -labelY);

             x += sizes[i];

             SEPARATOR.paintIcon(this, g, x + LEFT_SEPARATOR_INSET, (height - SEPARATOR.getIconHeight()) / 2);

             x += LEFT_SEPARATOR_INSET + SEPARATOR.getIconWidth() + RIGHT_SEPARATOR_INSET;
         }
     }

     private final T renderer = (T) HtmlRenderer.createLabel();
     private Node[] nodes;
     private double[] sizes;
     private double height;

     private void measurePrepaint() {
         List<Node> path = computeNodePath();

         int i = 0;

         nodes = path.toArray(new Node[path.size()]);
         sizes = new double[path.size()];

         int xTotal = 0;

         height = /*XXX*/0;

         for (Node n : nodes) {
             configureForNode(n);
             Dimension preferedSize = renderer.getPreferredSize();
             xTotal += sizes[i] = preferedSize.width;

             height = Math.max(height, preferedSize.height);

             i++;
         }

         setPreferredSize(new Dimension((xTotal + (nodes.length - 1) * (LEFT_SEPARATOR_INSET + SEPARATOR.getIconWidth() + RIGHT_SEPARATOR_INSET) + START_INSET), USABLE_HEIGHT/*(int) (height + 2 * INSET_HEIGHT)*/));
     }

     @Override
     public void propertyChange(PropertyChangeEvent evt) {
         SwingUtilities.invokeLater(new Runnable() {
             @Override public void run() {
                 measurePrepaint();
                 repaint();
             }
         });

     }

     private void expand(MouseEvent e) {
         int clickX = e.getPoint().x;
         int elemX = START_INSET;

         for (int i = 0; i < sizes.length; i++) {
             int startX = elemX;
             elemX += sizes[i];

             elemX += LEFT_SEPARATOR_INSET;

             if (clickX <= elemX) {
                 //found:
                 List<Node> path = computeNodePath();
                 Node selected = path.get(i);
                 if (e.getButton() == MouseEvent.BUTTON1) {
                     open(selected);
                 } else {
                     expand(startX, selected);
                 }
                 return ;
             }

             startX = elemX;
             elemX += SEPARATOR.getIconWidth();

             if (clickX <= elemX) {
                 //found:
                 List<Node> path = computeNodePath();
                 expand(startX, path.get(i));
                 return ;
             }

             elemX += RIGHT_SEPARATOR_INSET;
         }
     }

     private List<Node> computeNodePath() {
         ExplorerManager manager = findManager();
         List<Node> path = new ArrayList<Node>();
         Node sel = manager.getExploredContext();

         // see #223480; root context need not be the root of the node structure.
         Node stopAt = manager.getRootContext().getParentNode();
         while (sel != null && sel != stopAt) {
             path.add(sel);
             sel = sel.getParentNode();
         }

         path.remove(path.size() - 1); //XXX

         Collections.reverse(path);

         return path;
     }

     private void open(Node node) {
         Openable openable = node.getLookup().lookup(Openable.class);

         if (openable != null) {
             JumpList.checkAddEntry();
             openable.open();
         }
     }

     private void expand(int startX, final Node what) {
         if (what.getChildren().getNodesCount() == 0) return ;

         final ExplorerManager expandManager = new ExplorerManager();
         class Expanded extends JPanel implements ExplorerManager.Provider {
             public Expanded(LayoutManager layout) {
                 super(layout);
             }
             @Override public ExplorerManager getExplorerManager() {
                 return expandManager;
             }
         }
         final JPanel expanded = new Expanded(new BorderLayout());
         expanded.setBorder(new LineBorder(Color.BLACK, 1));

         final ListView listView = new ListView() {
             {
                 int nodesCount = what.getChildren().getNodesCount();

                 if (nodesCount >= MAX_ROWS_IN_POP_UP) {
                     list.setVisibleRowCount(MAX_ROWS_IN_POP_UP);
                 } else {
                     list.setVisibleRowCount(nodesCount);

                     NodeRenderer nr = new NodeRenderer();
                     int i = 0;
                     int width = getPreferredSize().width;

                     for (Node n : what.getChildren().getNodes()) {
                         if (nr.getListCellRendererComponent(list, n, i, false, false).getPreferredSize().width > width) {
                             Dimension pref = getPreferredSize();
                             pref.height += getHorizontalScrollBar().getPreferredSize().height;
                             setPreferredSize(pref);
                             break;
                         }
                     }
                 }
             }
         };
         listView.setPopupAllowed(false);
         expanded.add(listView, BorderLayout.CENTER);
         expandManager.setRootContext(what);

         Point place = new Point(startX, 0);

         SwingUtilities.convertPointToScreen(place, this);

         expanded.validate();

         final Popup popup = PopupFactory.getSharedInstance().getPopup(this, expanded, place.x, place.y - expanded.getPreferredSize().height);
         final AWTEventListener multicastListener = new AWTEventListener() {
             @Override public void eventDispatched(AWTEvent event) {
                     if (event instanceof MouseEvent && ((MouseEvent) event).getClickCount() > 0) {
                         Object source = event.getSource();

                         while (source instanceof Component) {
                             if (source == expanded) return ; //accept
                             source = ((Component) source).getParent();
                         }

                         popup.hide();
                         Toolkit.getDefaultToolkit().removeAWTEventListener(this);
                     }
             }
         };

         Toolkit.getDefaultToolkit().addAWTEventListener(multicastListener, AWTEvent.MOUSE_EVENT_MASK);

         expandManager.addPropertyChangeListener(new PropertyChangeListener() {
             @Override public void propertyChange(PropertyChangeEvent evt) {
                 if (ExplorerManager.PROP_SELECTED_NODES.equals(evt.getPropertyName())) {
                     Node[] selected = expandManager.getSelectedNodes();
                     if (selected.length == 1) {
                         open(selected[0]);
                         popup.hide();
                         Toolkit.getDefaultToolkit().removeAWTEventListener(multicastListener);
                     }
                 }
             }
         });

         popup.show();
     }

     private void configureForNode(Node node) {
         renderer.reset();

         Image nodeIcon = node.getIcon(BeanInfo.ICON_COLOR_16x16);
         Icon icon = nodeIcon != null && nodeIcon != BreadcrumbsController.NO_ICON ? ImageUtilities.image2Icon(nodeIcon) : null;
         int width = icon != null ? icon.getIconWidth() : 0;
         if (width > 0) {
             renderer.setIcon(icon);
             renderer.setIconTextGap(ICON_TEXT_SEPARATOR);
         } else {
             renderer.setIcon(null);
             renderer.setIconTextGap(0);
         }
         String html = node.getHtmlDisplayName();
         if (html != null) {
             renderer.setHtml(true);
             renderer.setText(html);
         } else {
             renderer.setHtml(false);
             renderer.setText(node.getDisplayName());
         }
         renderer.setFont(getFont());
     }

 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you 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 org.netbeans.modules.editor.breadcrumbs;

	import java.awt.AWTEvent;
	import java.awt.BorderLayout;
	import java.awt.Color;
	import java.awt.Component;
	import java.awt.Dimension;
	import java.awt.Graphics;
	import java.awt.Image;
	import java.awt.LayoutManager;
	import java.awt.Point;
	import java.awt.Toolkit;
	import java.awt.event.AWTEventListener;
	import java.awt.event.MouseAdapter;
	import java.awt.event.MouseEvent;
	import java.beans.BeanInfo;
	import java.beans.PropertyChangeEvent;
	import java.beans.PropertyChangeListener;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;
	import javax.swing.Icon;
	import javax.swing.JComponent;
	import javax.swing.JLabel;
	import javax.swing.JPanel;
	import javax.swing.Popup;
	import javax.swing.PopupFactory;
	import javax.swing.SwingUtilities;
	import javax.swing.UIManager;
	import javax.swing.border.LineBorder;
	import org.netbeans.api.actions.Openable;
	import org.netbeans.editor.JumpList;
	import org.netbeans.modules.editor.breadcrumbs.spi.BreadcrumbsController;
	import org.openide.awt.HtmlRenderer;
	import org.openide.awt.HtmlRenderer.Renderer;
	import org.openide.explorer.ExplorerManager;
	import org.openide.explorer.view.ListView;
	import org.openide.explorer.view.NodeRenderer;
	import org.openide.nodes.Node;
	import org.openide.util.ImageUtilities;
	import org.openide.util.WeakListeners;

	/**
	*
	* @author lahvac
	*/
	public class BreadCrumbComponent<T extends JLabel&Renderer> extends JComponent implements PropertyChangeListener {

	private final Icon SEPARATOR =
	ImageUtilities.image2Icon(ImageUtilities.loadImage("org/netbeans/modules/editor/breadcrumbs/resources/separator.png"));

	public BreadCrumbComponent() {
	setPreferredSize(new Dimension(0, COMPONENT_HEIGHT));
	addMouseListener(new MouseAdapter() {
	@Override public void mouseClicked(MouseEvent e) {
	expand(e);
	}
	});
	}

	private static final int USABLE_HEIGHT = 19;
	private static final int LEFT_SEPARATOR_INSET = 2;
	private static final int RIGHT_SEPARATOR_INSET = 10;
	private static final int ICON_TEXT_SEPARATOR = 5;
	private static final int START_INSET = 8;
	private static final int MAX_ROWS_IN_POP_UP = 20;
	public static final int COMPONENT_HEIGHT = USABLE_HEIGHT;

	private ExplorerManager seenManager;

	private PropertyChangeListener weakPCL;

	private ExplorerManager findManager() {
	ExplorerManager manager = ExplorerManager.find(this);

	if (seenManager != manager) {
	if (seenManager != null && weakPCL != null) {
	seenManager.removePropertyChangeListener(weakPCL);
	weakPCL = null;
	}
	if (manager != null) {
	weakPCL = WeakListeners.propertyChange(this, manager);
	manager.addPropertyChangeListener(weakPCL);
	}
	seenManager = manager;
	}

	assert manager != null;

	return manager;
	}

	@Override
	protected void paintComponent(Graphics g) {
	if (nodes == null) measurePrepaint();

	assert nodes != null;

	if( "Aqua".equals(UIManager.getLookAndFeel().getID()) ) //NOI18N
	setBackground(UIManager.getColor("NbExplorerView.background")); //NOI18N

	int height = getHeight();

	if (nodes.length == 0) {
	SEPARATOR.paintIcon(this, g, START_INSET, (height - SEPARATOR.getIconHeight()) / 2);
	return ;
	}

	int x = START_INSET;

	for (int i = 0; i < nodes.length; i++) {
	configureForNode(nodes[i]);
	Dimension preferred = renderer.getPreferredSize();
	int labelY = (height - preferred.height) / 2;
	g.translate(x, labelY);
	renderer.setSize(preferred);
	renderer.paint(g);
	g.translate(-x, -labelY);

	x += sizes[i];

	SEPARATOR.paintIcon(this, g, x + LEFT_SEPARATOR_INSET, (height - SEPARATOR.getIconHeight()) / 2);

	x += LEFT_SEPARATOR_INSET + SEPARATOR.getIconWidth() + RIGHT_SEPARATOR_INSET;
	}
	}

	private final T renderer = (T) HtmlRenderer.createLabel();
	private Node[] nodes;
	private double[] sizes;
	private double height;

	private void measurePrepaint() {
	List<Node> path = computeNodePath();

	int i = 0;

	nodes = path.toArray(new Node[path.size()]);
	sizes = new double[path.size()];

	int xTotal = 0;

	height = /XXX/0;

	for (Node n : nodes) {
	configureForNode(n);
	Dimension preferedSize = renderer.getPreferredSize();
	xTotal += sizes[i] = preferedSize.width;

	height = Math.max(height, preferedSize.height);

	i++;
	}

	setPreferredSize(new Dimension((xTotal + (nodes.length - 1) * (LEFT_SEPARATOR_INSET + SEPARATOR.getIconWidth() + RIGHT_SEPARATOR_INSET) + START_INSET), USABLE_HEIGHT/(int) (height + 2 INSET_HEIGHT)*/));
	}

	@Override
	public void propertyChange(PropertyChangeEvent evt) {
	SwingUtilities.invokeLater(new Runnable() {
	@Override public void run() {
	measurePrepaint();
	repaint();
	}
	});

	}

	private void expand(MouseEvent e) {
	int clickX = e.getPoint().x;
	int elemX = START_INSET;

	for (int i = 0; i < sizes.length; i++) {
	int startX = elemX;
	elemX += sizes[i];

	elemX += LEFT_SEPARATOR_INSET;

	if (clickX <= elemX) {
	//found:
	List<Node> path = computeNodePath();
	Node selected = path.get(i);
	if (e.getButton() == MouseEvent.BUTTON1) {
	open(selected);
	} else {
	expand(startX, selected);
	}
	return ;
	}

	startX = elemX;
	elemX += SEPARATOR.getIconWidth();

	if (clickX <= elemX) {
	//found:
	List<Node> path = computeNodePath();
	expand(startX, path.get(i));
	return ;
	}

	elemX += RIGHT_SEPARATOR_INSET;
	}
	}

	private List<Node> computeNodePath() {
	ExplorerManager manager = findManager();
	List<Node> path = new ArrayList<Node>();
	Node sel = manager.getExploredContext();

	// see #223480; root context need not be the root of the node structure.
	Node stopAt = manager.getRootContext().getParentNode();
	while (sel != null && sel != stopAt) {
	path.add(sel);
	sel = sel.getParentNode();
	}

	path.remove(path.size() - 1); //XXX

	Collections.reverse(path);

	return path;
	}

	private void open(Node node) {
	Openable openable = node.getLookup().lookup(Openable.class);

	if (openable != null) {
	JumpList.checkAddEntry();
	openable.open();
	}
	}

	private void expand(int startX, final Node what) {
	if (what.getChildren().getNodesCount() == 0) return ;

	final ExplorerManager expandManager = new ExplorerManager();
	class Expanded extends JPanel implements ExplorerManager.Provider {
	public Expanded(LayoutManager layout) {
	super(layout);
	}
	@Override public ExplorerManager getExplorerManager() {
	return expandManager;
	}
	}
	final JPanel expanded = new Expanded(new BorderLayout());
	expanded.setBorder(new LineBorder(Color.BLACK, 1));

	final ListView listView = new ListView() {
	{
	int nodesCount = what.getChildren().getNodesCount();

	if (nodesCount >= MAX_ROWS_IN_POP_UP) {
	list.setVisibleRowCount(MAX_ROWS_IN_POP_UP);
	} else {
	list.setVisibleRowCount(nodesCount);

	NodeRenderer nr = new NodeRenderer();
	int i = 0;
	int width = getPreferredSize().width;

	for (Node n : what.getChildren().getNodes()) {
	if (nr.getListCellRendererComponent(list, n, i, false, false).getPreferredSize().width > width) {
	Dimension pref = getPreferredSize();
	pref.height += getHorizontalScrollBar().getPreferredSize().height;
	setPreferredSize(pref);
	break;
	}
	}
	}
	}
	};
	listView.setPopupAllowed(false);
	expanded.add(listView, BorderLayout.CENTER);
	expandManager.setRootContext(what);

	Point place = new Point(startX, 0);

	SwingUtilities.convertPointToScreen(place, this);

	expanded.validate();

	final Popup popup = PopupFactory.getSharedInstance().getPopup(this, expanded, place.x, place.y - expanded.getPreferredSize().height);
	final AWTEventListener multicastListener = new AWTEventListener() {
	@Override public void eventDispatched(AWTEvent event) {
	if (event instanceof MouseEvent && ((MouseEvent) event).getClickCount() > 0) {
	Object source = event.getSource();

	while (source instanceof Component) {
	if (source == expanded) return ; //accept
	source = ((Component) source).getParent();
	}

	popup.hide();
	Toolkit.getDefaultToolkit().removeAWTEventListener(this);
	}
	}
	};

	Toolkit.getDefaultToolkit().addAWTEventListener(multicastListener, AWTEvent.MOUSE_EVENT_MASK);

	expandManager.addPropertyChangeListener(new PropertyChangeListener() {
	@Override public void propertyChange(PropertyChangeEvent evt) {
	if (ExplorerManager.PROP_SELECTED_NODES.equals(evt.getPropertyName())) {
	Node[] selected = expandManager.getSelectedNodes();
	if (selected.length == 1) {
	open(selected[0]);
	popup.hide();
	Toolkit.getDefaultToolkit().removeAWTEventListener(multicastListener);
	}
	}
	}
	});

	popup.show();
	}

	private void configureForNode(Node node) {
	renderer.reset();

	Image nodeIcon = node.getIcon(BeanInfo.ICON_COLOR_16x16);
	Icon icon = nodeIcon != null && nodeIcon != BreadcrumbsController.NO_ICON ? ImageUtilities.image2Icon(nodeIcon) : null;
	int width = icon != null ? icon.getIconWidth() : 0;
	if (width > 0) {
	renderer.setIcon(icon);
	renderer.setIconTextGap(ICON_TEXT_SEPARATOR);
	} else {
	renderer.setIcon(null);
	renderer.setIconTextGap(0);
	}
	String html = node.getHtmlDisplayName();
	if (html != null) {
	renderer.setHtml(true);
	renderer.setText(html);
	} else {
	renderer.setHtml(false);
	renderer.setText(node.getDisplayName());
	}
	renderer.setFont(getFont());
	}

	}