Java RequestProcessor.postRequest方法代碼示例

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Fire tree and status change. */
private void fireTreeAndStatus() {
    final int fireStatus = status;
    final int fireOldStatus = oldStatus;
    final Object fireTree = getDocumentRoot();

    if ( Util.THIS.isLoggable() ) /* then */ Util.THIS.debug("Firing tree status transition: " + oldStatus + "=>" + status); // NOI18N
    
    RequestProcessor.postRequest( new Runnable() {
        public void run() {
            pchs.firePropertyChange (PROP_STATUS, fireOldStatus, fireStatus);
            pchs.firePropertyChange (PROP_DOCUMENT_ROOT, null, fireTree);        
        }
    });
}
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Ensure that it is safe to call schedule() while the task is running
 * (should finish the task and run it again).
 */
public void testScheduleWhileRunning() throws Exception {
    class X implements Runnable {
        public synchronized void run() {
            try {
                if (cnt == 0) {
                    this.notify(); // #1
                    this.wait(9999); // #2
                    cnt++;
                } else {
                    cnt++;
                    this.notify(); // #3
                }
            } catch (InterruptedException ie) {
                ie.printStackTrace();
            }
        }
        public int cnt = 0;
    }
    X x = new X();
    synchronized (x) {
        RequestProcessor.Task task = RequestProcessor.postRequest(x);
        x.wait(9999); // #1
        assertEquals(0, x.cnt);
        task.schedule(0);
        x.notify(); // #2
        x.wait(9999); // #3
        assertEquals(2, x.cnt);
    }
}
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Make sure it is safe to call waitFinished() on a task from within
 * a task listener.
 */
public void testWaitFinishedFromNotification() throws Exception {
    class X implements Runnable {
        private Task task;
        private int cnt;
        public synchronized Task start() {
            if (task == null) {
                task = RequestProcessor.postRequest(this);
            }
            return task;
        }
        public void run() {
            cnt++;
        }
        public int getCount() {
            return cnt;
        }
        public void block() {
            start().waitFinished();
        }
    }
    final X x = new X();
    final Object lock = "wait for task to finish";
    final boolean[] finished = new boolean[1];
    x.start().addTaskListener(new TaskListener() {
        public void taskFinished(Task t) {
            x.block();
            finished[0] = true;
            synchronized (lock) {
                lock.notify();
            }
        }
    });
    synchronized (lock) {
        lock.wait(5000);
    }
    assertTrue(finished[0]);
    assertEquals(1, x.getCount());
}
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Make sure that successfully canceled task is not performed.
 */
public void testCancel() throws Exception {
    class X implements Runnable {
        public boolean performed = false;
        public void run() {
            performed = true;
        }
    }
    
    X x = new X();
    final boolean[] finished = new boolean[1];
    finished[0] = false;
    
    // post task with some delay
    RequestProcessor.Task task = RequestProcessor.postRequest(x, 1000);
    task.addTaskListener(new TaskListener() {
        @Override
        public void taskFinished(Task t) {
            finished[0] = true;
        }
    });

    boolean canceled = task.cancel();
    assertTrue("Task is canceled now", canceled);
    assertTrue("Cancelling actually means finished", finished[0]);
    Thread.sleep(1500); // wait longer than task delay
    assertFalse("Task should not be performed", x.performed);
}
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Check all selected nodes. */
protected void performAction (Node[] nodes) {

    if (nodes == null) return;
    
    RequestProcessor.postRequest(
           new CheckAction.RunAction (nodes));
}
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** A test to check that objects are executed in the right order.
     */
    public void testOrder () throws Exception {
        final int[] count = new int[1];
        final String[] fail = new String[1];
        
        class X extends Object 
        implements Runnable, Comparable {
            public int order;
            
            public void run () {
                if (order != count[0]++) {
                    if (fail[0] == null) {
                        fail[0] = "Executing task " + order + " instead of " + count[0];
                    }
                }
            }
            
            public int compareTo (Object o) {
                X x = (X)o;
                
                return System.identityHashCode (x) - System.identityHashCode (this);
            }
            
            @Override
            public String toString () {
                return "O: " + order;
            }
        }
        
        // prepare the tasks 
        X[] arr = new X[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = new X ();
        }
        
        // sort it
//        Arrays.sort (arr);
        
        for (int i = 0; i < arr.length; i++) {
            arr[i].order = i;
        }
        
        // execute the task as quickly as possible (only those with the same time
        // can have wrong order
        RequestProcessor.Task[] wait = new RequestProcessor.Task[arr.length];
        for (int i = 0; i < arr.length; i++) {
            wait[i] = RequestProcessor.postRequest (arr[i]);
        }
        
        // wait to all tasks to finish
        for (int i = 0; i < arr.length; i++) {
            wait[i].waitFinished ();
        }
        
        if (fail[0] != null) {
            fail (fail[0]);
        }
            
    }
 

import org.openide.util.RequestProcessor; //導入方法依賴的package包/類
/** Check all selected nodes. */
protected void performAction (Node[] nodes) {

    if (nodes == null) return;
    
    RequestProcessor.postRequest(
           new CheckDTDAction.RunAction (nodes));

}