/*
* FolderPane.java
*
* Created on June 8, 2007, 5:25 PM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package dyno.swing.beans;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.Rectangle;
import java.util.ArrayList;
import javax.swing.JComponent;
import javax.swing.Scrollable;
/**
* Windows文件浏览器左侧折叠面板组件类
* 实现了Scrollable，使其能放在JScrollPane中。
*
* @author William Chen
*/
public class FolderPane extends JComponent implements Scrollable {
/**
*
*/
private static final long serialVersionUID = 3988734667461076623L;
//所有的面板
private ArrayList<Folder> tabs = new ArrayList<Folder>();
//是否启动动画效果
private boolean animated;
/** Creates a new instance of FolderPane */
public FolderPane() {
//set UI
setUI(new FolderPaneUI());
setLayout(new FolderPaneLayout());
}
public void addFolder(String title, JComponent comp) {
addFolder(title, true, comp);
}
/**
* @param title 该面板的标题
* @param expanded 该面板初始状态是否展开
* @param comp 该面板的应用程序组件
*/
public void addFolder(String title, boolean expanded, JComponent comp) {
Folder tab = new Folder(title, expanded, comp);
tabs.add(tab);
this.add(tab);
//为该面板添加抽屉事件
((FolderPaneUI) ui).addTab(tab);
}
public boolean isAnimated() {
return animated;
}
public void setAnimated(boolean animated) {
this.animated = animated;
}
ArrayList<Folder> getTabs() {
return tabs;
}
public Dimension getPreferredScrollableViewportSize() {
return getPreferredSize();
}
public int getScrollableUnitIncrement(Rectangle visibleRect,
int orientation, int direction) {
return 10;
}
public int getScrollableBlockIncrement(Rectangle visibleRect,
int orientation, int direction) {
return 100;
}
public boolean getScrollableTracksViewportWidth() {
return true;
}
public boolean getScrollableTracksViewportHeight() {
return false;
}
//该布局类的布局管理器
class FolderPaneLayout implements LayoutManager {
private static final int INTER_TAB_PADDING = 15;
public FolderPaneLayout() {
}
public void addLayoutComponent(String name, Component comp) {
}
public void removeLayoutComponent(Component comp) {
}
public Dimension preferredLayoutSize(Container parent) {
//补充实现preferredSize以便在JScrollPane调整时使用
Insets insets = parent.getInsets();
int w = 0;
int h = 0;
for (Folder tab : tabs) {
Dimension dim = tab.getRequiredDimension();
if (dim.width > w) {
w = dim.width;
}
h += (dim.height + INTER_TAB_PADDING);
}
w += (insets.left + insets.right);
h += (insets.top + insets.bottom);
return new Dimension(w, h);
}
public Dimension minimumLayoutSize(Container parent) {
return new Dimension(0, 0);
}
public void layoutContainer(Container parent) {
Insets insets = parent.getInsets();
int width=parent.getWidth()-insets.left-insets.right;
int x = insets.left;
int y = insets.top;
for (Folder tab : tabs) {
Dimension dim = tab.getRequiredDimension();
tab.setBounds(x, y, width, dim.height);
tab.doLayout();
y += (dim.height + INTER_TAB_PADDING);
}
}
}
}