Android Open Source - Mpo_File_Parser_Example Cancelable Runnable

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License

The source code is released under:

MIT License

Java Source Code

/*The MIT License (MIT)
*//from   w w  w.ja v  a2s .co m
*Copyright (c) 2014 Poming Chen
*
*Permission is hereby granted, free of charge, to any person obtaining a copy
*of this software and associated documentation files (the "Software"), to deal
*in the Software without restriction, including without limitation the rights
*to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
*copies of the Software, and to permit persons to whom the Software is
*furnished to do so, subject to the following conditions:
*
*The above copyright notice and this permission notice shall be included in all
*copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
*OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*SOFTWARE.
*/

package tw.edu.nccu.cs.vipl.task;

public abstract class CancelableRunnable implements Runnable {

    private boolean mIsCanceled = false;
    private Object moLck = new Object();

    @Override
    final public void run() {
        if (isCanceled()) {
            return;
        }
        doTask();

    }

    public abstract void doTask();

    public void onCancel() {
        // do nothing
    }

    final public void cancel() {
        synchronized (moLck) {
            mIsCanceled = true;
            onCancel();
        }
    }

    final public boolean isCanceled() {
        synchronized (moLck) {
            return mIsCanceled;
        }
    }

}

Java Source Code List

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