Button.java

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// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2012 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0
 
package com.google.appinventor.components.runtime;
 
import com.google.appinventor.components.annotations.DesignerComponent;
import com.google.appinventor.components.annotations.SimpleEvent;
import com.google.appinventor.components.annotations.SimpleObject;
import com.google.appinventor.components.common.ComponentCategory;
import com.google.appinventor.components.common.YaVersion;
 
@DesignerComponent(version = YaVersion.BUTTON_COMPONENT_VERSION,
    category = ComponentCategory.USERINTERFACE,
    description = "Button with the ability to detect clicks.  Many aspects " +
    "of its appearance can be changed, as well as whether it is clickable " +
    "(<code>Enabled</code>), can be changed in the Designer or in the Blocks " +
    "Editor.")
@SimpleObject
public final class Button extends ButtonBase {
 
  public Button(ComponentContainer container) {
    super(container);
  }
 
 @Override
  public void click() {
    // Call the users Click event handler. Note that we distinguish the click() abstract method
    // implementation from the Click() event handler method.
    Click();
  }
 
  @SimpleEvent(description = "User tapped and released the button.")
  public void Click() {
    EventDispatcher.dispatchEvent(this, "Click");
  }
 
  @Override
  public boolean longClick() {
    // Call the users Click event handler. Note that we distinguish the longclick() abstract method
    // implementation from the LongClick() event handler method.
    return LongClick();
  }
 
  @SimpleEvent(description = "User held the button down.")
  public boolean LongClick() {
    return EventDispatcher.dispatchEvent(this, "LongClick");
  }
}