Java ButtonPeer类代码示例

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
/**
 * Sets the button's label to be the specified string.
 *
 * @param     label   the new label, or <code>null</code>
 *                if the button has no label.
 * @see       java.awt.Button#getLabel
 */
public void setLabel(String label) {
    boolean testvalid = false;

    synchronized (this) {
        if (label != this.label && (this.label == null ||
                                    !this.label.equals(label))) {
            this.label = label;
            ButtonPeer peer = (ButtonPeer)this.peer;
            if (peer != null) {
                peer.setLabel(label);
            }
            testvalid = true;
        }
    }

    // This could change the preferred size of the Component.
    if (testvalid) {
        invalidateIfValid();
    }
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
public void instrumentPeer() {
    origPeer = (ButtonPeer) getPeer();
    InvocationHandler handler = new InvocationHandler() {
        public Object invoke(Object proxy, Method method, Object[] args) {
            if (method.getName().equals("requestFocus")) {
                Container parent = getParent();
                parent.remove(TestButton.this);
                System.err.println("parent = " + parent);
                System.err.println("target = " + TestButton.this);
                System.err.println("new parent = " + TestButton.this.getParent());
            }
            Object ret = null;
            try {
                ret = method.invoke(origPeer, args);
            } catch (IllegalAccessException iae) {
                throw new Error("Test error.", iae);
            } catch (InvocationTargetException ita) {
                throw new Error("Test error.", ita);
            }
            return ret;
        }
    };

    proxiedPeer = (ButtonPeer) Proxy.newProxyInstance(ButtonPeer.class.getClassLoader(), new Class[] {ButtonPeer.class}, handler);
    setPeer(proxiedPeer);
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
void test() {
    setLabel("");
    setLabel(null);
    setLabel(getLabel());
    ((ButtonPeer) getPeer()).setLabel("");
    ((ButtonPeer) getPeer()).setLabel(null);
    ((ButtonPeer) getPeer()).setLabel(getLabel());

    setFont(null);
    setFont(getFont());
    getPeer().setFont(getFont());

    setBackground(null);
    setBackground(getBackground());
    getPeer().setBackground(getBackground());

    setForeground(null);
    setForeground(getForeground());
    getPeer().setForeground(getForeground());

    setEnabled(isEnabled());
    getPeer().setEnabled(isEnabled());
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
/**
 * Sets the button's label to be the specified string.
 *
 * @param     label   the new label, or {@code null}
 *                if the button has no label.
 * @see       java.awt.Button#getLabel
 */
public void setLabel(String label) {
    boolean testvalid = false;

    synchronized (this) {
        if (label != this.label && (this.label == null ||
                                    !this.label.equals(label))) {
            this.label = label;
            ButtonPeer peer = (ButtonPeer)this.peer;
            if (peer != null) {
                peer.setLabel(label);
            }
            testvalid = true;
        }
    }

    // This could change the preferred size of the Component.
    if (testvalid) {
        invalidateIfValid();
    }
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
/**
    * Sets the button's label to be the specified string.
    * 
    * @param     label   the new label, or <code>null</code>
    *                if the button has no label.
    * @see       java.awt.Button#getLabel
    */
   public void setLabel(String label) {
       boolean testvalid = false;

synchronized (this) {
    if (label != this.label && (this.label == null ||
				!this.label.equals(label))) {
        this.label = label;
	ButtonPeer peer = (ButtonPeer)this.peer;
	if (peer != null) {
	    peer.setLabel(label);
	}
	testvalid = true;
    }
}

// This could change the preferred size of the Component.
if (testvalid && valid) {
    invalidate();
}
   }
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
public static boolean attachFakePeer(Component comp) {
    if (comp == null || comp.isDisplayable()
          || comp instanceof javax.swing.JComponent
          || comp instanceof javax.swing.RootPaneContainer)
        return false;

    FakePeer peer = null;

    if (comp instanceof Label)
        peer = getFakePeer(LabelPeer.class, new FakeLabelPeer((Label) comp));
    else if (comp instanceof Button)
        peer = getFakePeer(ButtonPeer.class, new FakeButtonPeer((Button) comp));                   
    else if (comp instanceof Panel)
        peer = getFakePeer(new Class[] {ContainerPeer.class, PanelPeer.class}, new FakePanelPeer((Panel) comp));
    else if (comp instanceof TextField)
        peer = getFakePeer(new Class[] {TextFieldPeer.class, TextComponentPeer.class}, new FakeTextFieldPeer((TextField) comp));
    else if (comp instanceof TextArea)
        peer = getFakePeer(new Class[] {TextAreaPeer.class, TextComponentPeer.class}, new FakeTextAreaPeer((TextArea) comp));
    else if (comp instanceof TextComponent)
        peer = getFakePeer(TextComponentPeer.class, new FakeTextComponentPeer((TextComponent) comp));
    else if (comp instanceof Checkbox)
        peer = getFakePeer(CheckboxPeer.class, new FakeCheckboxPeer((Checkbox) comp));
    else if (comp instanceof Choice)
        peer = getFakePeer(ChoicePeer.class, new FakeChoicePeer((Choice) comp));
    else if (comp instanceof List)
        peer = getFakePeer(ListPeer.class, new FakeListPeer((List) comp));
    else if (comp instanceof Scrollbar)
        peer = getFakePeer(ScrollbarPeer.class, new FakeScrollbarPeer((Scrollbar) comp));
    else if (comp instanceof ScrollPane)
        peer = getFakePeer(new Class[] {ContainerPeer.class, ScrollPanePeer.class}, new FakeScrollPanePeer((ScrollPane) comp));
    else if (comp instanceof Canvas)
        peer = getFakePeer(CanvasPeer.class, new FakeCanvasPeer((Canvas) comp));
    else
        return false;

    attachFakePeer(comp, peer);
    return true;
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
public void instrumentPeer() {
    origPeer = AWTAccessor.getComponentAccessor().getPeer(this);

    InvocationHandler handler = new InvocationHandler() {
        public Object invoke(Object proxy, Method method, Object[] args) {
            if (method.getName().equals("requestFocus")) {
                Container parent = getParent();
                parent.remove(TestButton.this);
                System.err.println("parent = " + parent);
                System.err.println("target = " + TestButton.this);
                System.err.println("new parent = " + TestButton.this.getParent());
            }
            Object ret = null;
            try {
                ret = method.invoke(origPeer, args);
            } catch (IllegalAccessException iae) {
                throw new Error("Test error.", iae);
            } catch (InvocationTargetException ita) {
                throw new Error("Test error.", ita);
            }
            return ret;
        }
    };

    proxiedPeer = (ButtonPeer) Proxy.newProxyInstance(
                                ButtonPeer.class.getClassLoader(),
                                new Class[] {ButtonPeer.class}, handler);
    setPeer(proxiedPeer);
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
/**
  * Sets the label for this button to the specified value.
  *
  * @param label The new label for this button.
  */
public synchronized void
setLabel(String label)
{
  this.label = label;
  actionCommand = label;
  if (peer != null)
    {
      ButtonPeer bp = (ButtonPeer) peer;
      bp.setLabel (label);
    }
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
protected ButtonPeer createButton(Button target)
{
  checkHeadLess("No ButtonPeer can be created in an headless" +
                    "graphics environment.");

  return new SwingButtonPeer(target);
}
 

import java.awt.peer.ButtonPeer; //导入依赖的package包/类
protected ButtonPeer createButton(Button target)
{
  checkHeadLess("No ButtonPeer can be created in an headless" +
  		      "graphics environment.");
  
  return new SwingButtonPeer(target);
}