Package org.eclipse.ui.internal.progress

Source Code of org.eclipse.ui.internal.progress.ProgressAnimationItem

/*******************************************************************************
* Copyright (c) 2004, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
*     IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.progress;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.action.IAction;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.progress.IProgressConstants;
import org.eclipse.ui.statushandlers.StatusAdapter;
import org.eclipse.ui.statushandlers.StatusManager;

/**
* The ProgressAnimationItem is the animation items that uses
* the progress bar.
*/
public class ProgressAnimationItem extends AnimationItem implements
        FinishedJobs.KeptJobsListener {

    ProgressBar bar;

    MouseListener mouseListener;

    Composite top;

    ToolBar toolbar;

    ToolItem toolButton;

    ProgressRegion progressRegion;

    Image noneImage, okImage, errorImage;

    boolean animationRunning;

    JobInfo lastJobInfo;

    // ProgressBar flags
  private int flags;

    /**
     * Create an instance of the receiver in the supplied region.
     *
     * @param region The ProgressRegion that contains the receiver.
     * @param flags flags to use for creation of the progress bar
     */
    ProgressAnimationItem(ProgressRegion region, int flags) {
        super(region.workbenchWindow);
        this.flags = flags;
        FinishedJobs.getInstance().addListener(this);

        progressRegion = region;
        mouseListener = new MouseAdapter() {
            public void mouseDoubleClick(MouseEvent e) {
                doAction();
            }
        };
    }

    void doAction() {

        JobTreeElement[] jobTreeElements = FinishedJobs.getInstance()
                .getJobInfos();
        // search from end (youngest)
        for (int i = jobTreeElements.length - 1; i >= 0; i--) {
            if (jobTreeElements[i] instanceof JobInfo) {
                JobInfo ji = (JobInfo) jobTreeElements[i];
                Job job = ji.getJob();
                if (job != null) {

                    IStatus status = job.getResult();
                    if (status != null && status.getSeverity() == IStatus.ERROR) {
            StatusAdapter statusAdapter = StatusAdapterHelper
                .getInstance().getStatusAdapter(ji);

            StatusManager.getManager().handle(statusAdapter,
                StatusManager.SHOW);

            JobTreeElement topElement = (JobTreeElement) ji
                .getParent();
            if (topElement == null) {
              topElement = ji;
            }
            FinishedJobs.getInstance().remove(topElement);
          }

                    IAction action = null;
                    Object property = job
                            .getProperty(IProgressConstants.ACTION_PROPERTY);
                    if (property instanceof IAction) {
            action = (IAction) property;
          }
                    if (action != null && action.isEnabled()) {
                        action.run();
                        JobTreeElement topElement = (JobTreeElement) ji
                                .getParent();
                        if (topElement == null) {
              topElement = ji;
            }
                        FinishedJobs.getInstance().remove(topElement);
                        return;
                    }
                }
            }
        }
       
        progressRegion.processDoubleClick();
        refresh();
    }

    private IAction getAction(Job job) {
        Object property = job.getProperty(IProgressConstants.ACTION_PROPERTY);
        if (property instanceof IAction) {
      return (IAction) property;
    }
        return null;
    }

    private void refresh() {

        // Abort the refresh if we are in the process of shutting down
        if (!PlatformUI.isWorkbenchRunning()) {
      return;
    }

        if (toolbar == null || toolbar.isDisposed()) {
      return;
    }

        lastJobInfo = null;

        JobTreeElement[] jobTreeElements = FinishedJobs.getInstance()
                .getJobInfos();
        // search from end (youngest)
        for (int i = jobTreeElements.length - 1; i >= 0; i--) {
            if (jobTreeElements[i] instanceof JobInfo) {
                JobInfo ji = (JobInfo) jobTreeElements[i];
                lastJobInfo = ji;
                Job job = ji.getJob();
                if (job != null) {
                    IStatus status = job.getResult();
                    if (status != null && status.getSeverity() == IStatus.ERROR) {
                        // green arrow with error overlay
                        initButton(
                                errorImage,
                                NLS.bind(ProgressMessages.ProgressAnimationItem_error, job.getName()));
                        return;
                    }
                    IAction action = getAction(job);
                    if (action != null && action.isEnabled()) {
                        // green arrow with exclamation mark
                        String tt = action.getToolTipText();
                        if (tt == null || tt.trim().length() == 0) {
              tt = NLS.bind(ProgressMessages.ProgressAnimationItem_ok, job.getName());
            }
                        initButton(okImage, tt);
                        return;
                    }
                    // just the green arrow
                    initButton(noneImage, ProgressMessages.ProgressAnimationItem_tasks);
                    return;
                }
            }
        }
       
        if (animationRunning) {
            initButton(noneImage, ProgressMessages.ProgressAnimationItem_tasks);
            return;
        }

        // if nothing found hide tool item
        toolbar.setVisible(false);
    }

    private void initButton(Image im, String tt) {
        toolButton.setImage(im);
        toolButton.setToolTipText(tt);
        toolbar.setVisible(true);
        toolbar.getParent().layout(); // must layout
    }

    /*
     * (non-Javadoc)
     *
     * @see org.eclipse.ui.internal.progress.AnimationItem#createAnimationItem(org.eclipse.swt.widgets.Composite)
     */
    protected Control createAnimationItem(Composite parent) {

        if (okImage == null) {
            Display display = parent.getDisplay();
            noneImage = WorkbenchImages.getWorkbenchImageDescriptor("progress/progress_none.gif").createImage(display); //$NON-NLS-1$
            okImage = WorkbenchImages.getWorkbenchImageDescriptor("progress/progress_ok.gif").createImage(display); //$NON-NLS-1$
            errorImage = WorkbenchImages.getWorkbenchImageDescriptor("progress/progress_error.gif").createImage(display); //$NON-NLS-1$
        }

        top = new Composite(parent, SWT.NULL);
        top.addDisposeListener(new DisposeListener() {
            public void widgetDisposed(DisposeEvent e) {
                FinishedJobs.getInstance().removeListener(
                        ProgressAnimationItem.this);
                noneImage.dispose();
                okImage.dispose();
                errorImage.dispose();
            }
        });

        boolean isCarbon = "carbon".equals(SWT.getPlatform()); //$NON-NLS-1$

        GridLayout gl = new GridLayout();
        if (isHorizontal())
          gl.numColumns = isCarbon ? 3 : 2;
        gl.marginHeight = 0;
        gl.marginWidth = 0;
        if (isHorizontal()) {
          gl.horizontalSpacing = 2;
        } else {
          gl.verticalSpacing = 2;
        }
        top.setLayout(gl);

        bar = new ProgressBar(top, flags | SWT.INDETERMINATE);
        bar.setVisible(false);
        bar.addMouseListener(mouseListener);
       
        GridData gd;
        int hh = 12;
        if (isHorizontal()) {
          gd = new GridData(SWT.BEGINNING, SWT.CENTER, true, false);
          gd.heightHint = hh;
        } else {
          gd = new GridData(SWT.CENTER, SWT.BEGINNING, false, true);
          gd.widthHint = hh;         
        }

        bar.setLayoutData(gd);

        toolbar = new ToolBar(top, SWT.FLAT);
        toolbar.setVisible(false);

        toolButton = new ToolItem(toolbar, SWT.NONE);
        toolButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                doAction();
            }
        });

        if (isCarbon) {
      new Label(top, SWT.NONE).setLayoutData(new GridData(4, 4));
    }

        refresh();

        return top;
    }

    /**
   * @return <code>true</code> if the control is horizontally oriented
   */
  private boolean isHorizontal() {
    return (flags & SWT.HORIZONTAL) != 0;
  }

  /*
     * (non-Javadoc)
     *
     * @see org.eclipse.ui.internal.progress.AnimationItem#getControl()
     */
    public Control getControl() {
        return top;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.eclipse.ui.internal.progress.AnimationItem#animationDone()
     */
    void animationDone() {
        super.animationDone();
        animationRunning = false;
        if (bar.isDisposed()) {
      return;
    }
        bar.setVisible(false);
        refresh();
    }

    /**
     * @return <code>true</code> when the animation is running
     */
    public boolean animationRunning() {
      return animationRunning;
    }
    /*
     * (non-Javadoc)
     *
     * @see org.eclipse.ui.internal.progress.AnimationItem#animationStart()
     */
    void animationStart() {
        super.animationStart();
        animationRunning = true;
        if (bar.isDisposed()) {
      return;
    }
        bar.setVisible(true);
        refresh();
    }

    public void removed(JobTreeElement info) {
        final Display display = Display.getDefault();
        display.asyncExec(new Runnable() {
            public void run() {
                refresh();
            }
        });
    }

    public void finished(final JobTreeElement jte) {
        final Display display = Display.getDefault();
        display.asyncExec(new Runnable() {
            public void run() {
                refresh();
            }
        });
    }
   
}
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