//#preprocessor
/*
* PreprocessorDemoScreen.java
*
* Copyright � 1998-2011 Research In Motion Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Note: For the sake of simplicity, this sample application may not leverage
* resource bundles and resource strings. However, it is STRONGLY recommended
* that application developers make use of the localization features available
* within the BlackBerry development platform to ensure a seamless application
* experience across a variety of languages and geographies. For more information
* on localizing your application, please refer to the BlackBerry Java Development
* Environment Development Guide associated with this release.
*/
package com.rim.samples.device.preprocessordemo;
/**
* Import the TouchEvent and TouchGesture classes if TOUCH_API exists.
*
* Note: net.rim.device.api.ui.*; could be used instead of the preprocessor
* directive since the package includes the TouchEvent and TouchGesture
* classes. If these classes are supported in the JDE version then they
* will be included by the package import. However, the directive serves
* as an example of how to import packages which are exclusive to certain
* JDE versions without fragmenting the code across multiple code bases.
*/
//#ifdef TOUCH_API
import net.rim.device.api.ui.TouchEvent;
import net.rim.device.api.ui.TouchGesture;
import net.rim.device.api.ui.component.BasicEditField;
import net.rim.device.api.ui.component.RichTextField;
import net.rim.device.api.ui.component.SeparatorField;
import net.rim.device.api.ui.container.MainScreen;
/**
* This screen displays a text field which may be cleared by the user. The
* preprocessor is used to determine whether to include the swipe gesture as an
* option to clear the text.
*/
public final class PreprocessorDemoScreen extends MainScreen {
private final BasicEditField _textArea;
/**
* Creates a new PreprocessorDemoScreen object
*/
public PreprocessorDemoScreen() {
setTitle("Preprocessor Demo");
// Indicate how the user may clear the text
// #ifdef TOUCH_API
add(new RichTextField(
"Swipe the screen or use the menu to clear the text"));
// #else
add(new RichTextField("Use the menu to clear the text"));
// #endif
add(new SeparatorField());
_textArea = new BasicEditField("Text: ", "");
add(_textArea);
}
// #ifdef TOUCH_API
/**
* Clears the text field if a swipe touch gesture is detected
*
* @see net.rim.device.api.ui.Screen#touchEvent(TouchEvent)
*/
protected boolean touchEvent(final TouchEvent event) {
if (event.getEvent() == TouchEvent.GESTURE
&& event.getGesture().getEvent() == TouchGesture.SWIPE) {
_textArea.setText("");
return true;
}
return super.touchEvent(event);
}
// #endif
/**
* @see net.rim.api.ui.container.MainScreen#onSavePrompt()
*/
protected boolean onSavePrompt() {
return true; // Prevent the save dialog from appearing
}
}