synthtoolbarui.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)SynthToolBarUI.java	1.15 08/02/19
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.swing.plaf.synth;

import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.Rectangle;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.Box;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JSeparator;
import javax.swing.JToolBar;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicToolBarUI;
import sun.swing.plaf.synth.SynthIcon;
import sun.swing.plaf.synth.SynthUI;

/**
 * A Synth L&F implementation of ToolBarUI.  This implementation 
 * is a "combined" view/controller.
 * <p>
 *
 * @version 1.15, 02/19/08
 */
class SynthToolBarUI extends BasicToolBarUI implements PropertyChangeListener,
           SynthUI {
    protected Icon handleIcon = null;
    protected Rectangle contentRect = new Rectangle();

    private SynthStyle style;
    private SynthStyle contentStyle;
    private SynthStyle dragWindowStyle;
    
    public static ComponentUI createUI(JComponent c) {
	return new SynthToolBarUI();
    }

    @Override
    protected void installDefaults() {
        toolBar.setLayout(createLayout());
        updateStyle(toolBar);
    }

    @Override
    protected void installListeners() {
        super.installListeners();
        toolBar.addPropertyChangeListener(this);
    }

    @Override
    protected void uninstallListeners() {
        super.uninstallListeners();
        toolBar.removePropertyChangeListener(this);
    }

    private void updateStyle(JToolBar c) {
        SynthContext context = getContext(
                c, Region.TOOL_BAR_CONTENT, null, ENABLED);
        contentStyle = SynthLookAndFeel.updateStyle(context, this);
        context.dispose();

        context = getContext(c, Region.TOOL_BAR_DRAG_WINDOW, null, ENABLED);
        dragWindowStyle = SynthLookAndFeel.updateStyle(context, this);
        context.dispose();
        
        context = getContext(c, ENABLED);
        SynthStyle oldStyle = style;

        style = SynthLookAndFeel.updateStyle(context, this);
        if (oldStyle != style) {
            handleIcon =
                style.getIcon(context, "ToolBar.handleIcon");
            if (oldStyle != null) {
                uninstallKeyboardActions();
                installKeyboardActions();
            }
        }
        context.dispose();
    }

    @Override
    protected void uninstallDefaults() {
        SynthContext context = getContext(toolBar, ENABLED);

        style.uninstallDefaults(context);
        context.dispose();
        style = null;

        handleIcon = null;

        context = getContext(toolBar, Region.TOOL_BAR_CONTENT,
                             contentStyle, ENABLED);
        contentStyle.uninstallDefaults(context);
        context.dispose();
        contentStyle = null;

        context = getContext(toolBar, Region.TOOL_BAR_DRAG_WINDOW,
                             dragWindowStyle, ENABLED);
        dragWindowStyle.uninstallDefaults(context);
        context.dispose();
        dragWindowStyle = null;

        toolBar.setLayout(null);
    }

    @Override
    protected void installComponents() {}

    @Override
    protected void uninstallComponents() {}

    protected LayoutManager createLayout() {
        return new SynthToolBarLayoutManager();
    }

    public SynthContext getContext(JComponent c) {
        return getContext(c, getComponentState(c));
    }

    private SynthContext getContext(JComponent c, int state) {
        return SynthContext.getContext(SynthContext.class, c,
                    SynthLookAndFeel.getRegion(c), style, state);
    }

    private SynthContext getContext(JComponent c, Region region, SynthStyle style) {
        return SynthContext.getContext(SynthContext.class, c, region,
                                       style, getComponentState(c, region));
    }

    private SynthContext getContext(JComponent c, Region region,
                                    SynthStyle style, int state) {
        return SynthContext.getContext(SynthContext.class, c, region,
                                       style, state);
    }

    private Region getRegion(JComponent c) {
        return SynthLookAndFeel.getRegion(c);
    }

    private int getComponentState(JComponent c) {
        return SynthLookAndFeel.getComponentState(c);
    }

    private int getComponentState(JComponent c, Region region) {
        return SynthLookAndFeel.getComponentState(c);
    }

    @Override
    public void update(Graphics g, JComponent c) {
        SynthContext context = getContext(c);

        SynthLookAndFeel.update(context, g);
        context.getPainter().paintToolBarBackground(context,
                          g, 0, 0, c.getWidth(), c.getHeight(),
                          toolBar.getOrientation());
        paint(context, g);
        context.dispose();
    }

    @Override
    public void paint(Graphics g, JComponent c) {
        SynthContext context = getContext(c);

        paint(context, g);
        context.dispose();
    }

    public void paintBorder(SynthContext context, Graphics g, int x,
                            int y, int w, int h) {
        context.getPainter().paintToolBarBorder(context, g, x, y, w, h,
                                                toolBar.getOrientation());
    }

    // Overloaded to do nothing so we can share listeners.
    @Override
    protected void setBorderToNonRollover(Component c) {}

    // Overloaded to do nothing so we can share listeners.
    @Override
    protected void setBorderToRollover(Component c) {}

    // Overloaded to do nothing so we can share listeners.
    @Override
    protected void setBorderToNormal(Component c) {}

    protected void paint(SynthContext context, Graphics g) {
        if (handleIcon != null && toolBar.isFloatable()) {
            int startX = toolBar.getComponentOrientation().isLeftToRight() ?
                0 : toolBar.getWidth() -
                    SynthIcon.getIconWidth(handleIcon, context);
            SynthIcon.paintIcon(handleIcon, context, g, startX, 0,
                    SynthIcon.getIconWidth(handleIcon, context),
                    SynthIcon.getIconHeight(handleIcon, context));
        }

        SynthContext subcontext = getContext(
                toolBar, Region.TOOL_BAR_CONTENT, contentStyle);
        paintContent(subcontext, g, contentRect);
        subcontext.dispose();
    }

    public void paintContent(SynthContext context, Graphics g,
            Rectangle bounds) {
        SynthLookAndFeel.updateSubregion(context, g, bounds);
        context.getPainter().paintToolBarContentBackground(context, g,
                             bounds.x, bounds.y, bounds.width, bounds.height,
                             toolBar.getOrientation());
        context.getPainter().paintToolBarContentBorder(context, g,
                             bounds.x, bounds.y, bounds.width, bounds.height,
                             toolBar.getOrientation());
    }

    @Override
    protected void paintDragWindow(Graphics g) {