package com.explodingpixels.painter;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.KeyboardFocusManager;
import java.awt.Window;
import javax.swing.SwingUtilities;
import com.explodingpixels.widgets.WindowUtils;
/**
* An implementation of {@link com.explodingpixels.painter.MacWidgetsPainter} that delegates to given {@code Painter}
* based on the focused state of the {@link java.awt.Component} supplied in the
* {@link #paint(java.awt.Graphics2D, java.awt.Component, int, int)} method.
*/
public class FocusStatePainter implements MacWidgetsPainter<Component> {
private MacWidgetsPainter<Component> fComponentFocusedPainter;
private MacWidgetsPainter<Component> fWindowFocusedPainter;
private MacWidgetsPainter<Component> fWindowUnfocusedPainter;
/**
* Creates a {@link com.explodingpixels.painter.MacWidgetsPainter} that delegates to the given {@code Painter}s
* based on the focus state of the supplied {@link java.awt.Component} or the focus
* state of it's parent {@link java.awt.Window}.
*
* @param componentFocusedPainter
* the {@code Painter} to use when the given {@code Component} is
* focused or it's parent {@code java.awt.Window} is focused.
* @param windowUnfocusedPainter
* the {@code Painter} to use when the given {@code Component}'s
* parent {@code java.awt.Window} is unfocused.
*/
public FocusStatePainter(MacWidgetsPainter<Component> componentFocusedPainter,
MacWidgetsPainter<Component> windowUnfocusedPainter) {
this(componentFocusedPainter, windowUnfocusedPainter,
windowUnfocusedPainter);
}
/**
* Creates a {@link com.explodingpixels.painter.MacWidgetsPainter} that delegates to the given {@code Painter}s
* based on the focus state of the supplied {@link java.awt.Component} or the focus
* state of it's parent {@link java.awt.Window}.
*
* @param componentFocusedPainter
* the {@code Painter} to use when the given {@code Component} is
* focused.
* @param windowFocusedPainter
* the {@code Painter} to use when the given {@code Component} is
* unfocused but the {@code Component}'s parent window is
* focused.
* @param windowUnfocusedPainter
* the {@code Painter} to use when the given {@code Component}'s
* parent {@code java.awt.Window} is unfocused.
*/
public FocusStatePainter(MacWidgetsPainter<Component> componentFocusedPainter,
MacWidgetsPainter<Component> windowFocusedPainter,
MacWidgetsPainter<Component> windowUnfocusedPainter) {
if (componentFocusedPainter == null) {
throw new IllegalArgumentException(
"Component focused Painter cannot be null.");
}
if (windowFocusedPainter == null) {
throw new IllegalArgumentException(
"Window focused Painter cannot be null.");
}
if (windowUnfocusedPainter == null) {
throw new IllegalArgumentException(
"Window unfocused Painter cannot be null.");
}
fComponentFocusedPainter = componentFocusedPainter;
fWindowFocusedPainter = windowFocusedPainter;
fWindowUnfocusedPainter = windowUnfocusedPainter;
}
public void paint(Graphics2D g, Component component, int width, int height) {
MacWidgetsPainter<Component> painterToUse;
Window activeAncestor = null;
Window active = KeyboardFocusManager.getCurrentKeyboardFocusManager()
.getActiveWindow();
if (active != null) {
activeAncestor = SwingUtilities.getWindowAncestor(active);
}
Window componentAncestor = SwingUtilities.getWindowAncestor(component);
if (component.hasFocus() || componentAncestor.equals(activeAncestor)) {
painterToUse = fComponentFocusedPainter;
} else if (WindowUtils.isParentWindowFocused(component)
|| componentAncestor.equals(activeAncestor)) {
painterToUse = fWindowFocusedPainter;
} else {
painterToUse = fWindowUnfocusedPainter;
}
painterToUse.paint(g, component, width, height);
}
}