Examples with DisposeListener org.eclipse.swt.events.DisposeListener used on opensource projects

Example 51 with DisposeListener

use of org.eclipse.swt.events.DisposeListener in project eclipse.platform.text by eclipse.

the class AbstractInformationControlManager method getInformationControl.

/**
 * Returns the information control. If the information control has not been created yet,
 * it is automatically created.
 *
 * @return the information control
 */
protected IInformationControl getInformationControl() {
    if (fDisposed)
        return fInformationControl;
    IInformationControlCreator creator = null;
    if (fCustomInformationControlCreator == null) {
        creator = fInformationControlCreator;
        if (fIsCustomInformationControl && fInformationControl != null) {
            if (fInformationControl instanceof IInformationControlExtension5)
                fSizeConstraints = null;
            fInformationControl.dispose();
            fInformationControl = null;
        }
        fIsCustomInformationControl = false;
    } else {
        creator = fCustomInformationControlCreator;
        if (creator instanceof IInformationControlCreatorExtension) {
            IInformationControlCreatorExtension extension = (IInformationControlCreatorExtension) creator;
            if (fInformationControl != null && extension.canReuse(fInformationControl))
                return fInformationControl;
        }
        if (fInformationControl != null) {
            if (fInformationControl instanceof IInformationControlExtension5)
                fSizeConstraints = null;
            fInformationControl.dispose();
            fInformationControl = null;
        }
        fIsCustomInformationControl = true;
    }
    if (fInformationControl == null) {
        fInformationControl = creator.createInformationControl(fSubjectControl.getShell());
        fInformationControl.addDisposeListener(new DisposeListener() {

            @Override
            public void widgetDisposed(DisposeEvent e) {
                handleInformationControlDisposed();
            }
        });
        if (fInformationControlCloser != null)
            fInformationControlCloser.setInformationControl(fInformationControl);
    }
    return fInformationControl;
}

Example 52 with DisposeListener

use of org.eclipse.swt.events.DisposeListener in project eclipse.platform.text by eclipse.

the class AnnotationRulerColumn method createControl.

@Override
public Control createControl(CompositeRuler parentRuler, Composite parentControl) {
    fParentRuler = parentRuler;
    fCachedTextViewer = parentRuler.getTextViewer();
    fCachedTextWidget = fCachedTextViewer.getTextWidget();
    fHitDetectionCursor = parentControl.getDisplay().getSystemCursor(SWT.CURSOR_HAND);
    fCanvas = createCanvas(parentControl);
    fCanvas.addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent event) {
            if (fCachedTextViewer != null)
                doubleBufferPaint(event.gc);
        }
    });
    fCanvas.addDisposeListener(new DisposeListener() {

        @Override
        public void widgetDisposed(DisposeEvent e) {
            handleDispose();
            fCachedTextViewer = null;
            fCachedTextWidget = null;
        }
    });
    fMouseListener = new MouseListener() {

        @Override
        public void mouseUp(MouseEvent event) {
            int lineNumber;
            if (isPropagatingMouseListener()) {
                fParentRuler.setLocationOfLastMouseButtonActivity(event.x, event.y);
                lineNumber = fParentRuler.getLineOfLastMouseButtonActivity();
            } else
                lineNumber = fParentRuler.toDocumentLineNumber(event.y);
            if (1 == event.button)
                mouseClicked(lineNumber);
        }

        @Override
        public void mouseDown(MouseEvent event) {
            int lineNumber;
            if (isPropagatingMouseListener()) {
                fParentRuler.setLocationOfLastMouseButtonActivity(event.x, event.y);
                lineNumber = fParentRuler.getLineOfLastMouseButtonActivity();
            } else
                lineNumber = fParentRuler.toDocumentLineNumber(event.y);
            if (1 == event.button)
                AnnotationRulerColumn.this.mouseDown(lineNumber);
        }

        @Override
        public void mouseDoubleClick(MouseEvent event) {
            int lineNumber;
            if (isPropagatingMouseListener()) {
                fParentRuler.setLocationOfLastMouseButtonActivity(event.x, event.y);
                lineNumber = fParentRuler.getLineOfLastMouseButtonActivity();
            } else
                lineNumber = fParentRuler.toDocumentLineNumber(event.y);
            if (1 == event.button)
                mouseDoubleClicked(lineNumber);
        }
    };
    fCanvas.addMouseListener(fMouseListener);
    fCanvas.addMouseMoveListener(new MouseMoveListener() {

        @Override
        public void mouseMove(MouseEvent e) {
            handleMouseMove(e);
        }
    });
    fCanvas.addMouseWheelListener(new MouseWheelListener() {

        @Override
        public void mouseScrolled(MouseEvent e) {
            handleMouseScrolled(e);
        }
    });
    if (fCachedTextViewer != null) {
        VisibleLinesTracker.track(fCachedTextViewer, lineHeightChangeHandler);
        fCachedTextViewer.addTextListener(fLineListener);
        // on word wrap toggle a "resized" ControlEvent is fired: suggest a redraw of the ruler
        fCachedTextWidget.addControlListener(new ControlAdapter() {

            @Override
            public void controlResized(ControlEvent e) {
                if (fCachedTextWidget != null && fCachedTextWidget.getWordWrap()) {
                    redraw();
                }
            }
        });
    }
    return fCanvas;
}

Example 53 with DisposeListener

use of org.eclipse.swt.events.DisposeListener in project eclipse.platform.text by eclipse.

the class LineNumberRulerColumn method createControl.

@Override
public Control createControl(CompositeRuler parentRuler, Composite parentControl) {
    fParentRuler = parentRuler;
    fCachedTextViewer = parentRuler.getTextViewer();
    fCachedTextWidget = fCachedTextViewer.getTextWidget();
    // on word wrap toggle a "resized" ControlEvent is fired: suggest a redraw of the line ruler
    fCachedTextWidget.addControlListener(new ControlAdapter() {

        @Override
        public void controlResized(ControlEvent e) {
            if (fCachedTextWidget != null && fCachedTextWidget.getWordWrap()) {
                postRedraw();
            }
        }
    });
    // track when StyledText is redrawn to check if some line height changed. In this case, the ruler must be redrawn
    // to draw line number with well height.
    VisibleLinesTracker.track(fCachedTextViewer, lineHeightChangeHandler);
    fCanvas = new Canvas(parentControl, SWT.NO_FOCUS) {

        @Override
        public void addMouseListener(MouseListener listener) {
            // see bug 40889, bug 230073 and AnnotationRulerColumn#isPropagatingMouseListener()
            if (listener == fMouseHandler)
                super.addMouseListener(listener);
            else {
                TypedListener typedListener = null;
                if (listener != null)
                    typedListener = new TypedListener(listener);
                addListener(SWT.MouseDoubleClick, typedListener);
            }
        }
    };
    fCanvas.setBackground(getBackground(fCanvas.getDisplay()));
    fCanvas.setForeground(fForeground);
    fCanvas.addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent event) {
            if (fCachedTextViewer != null)
                doubleBufferPaint(event.gc);
        }
    });
    fCanvas.addDisposeListener(new DisposeListener() {

        @Override
        public void widgetDisposed(DisposeEvent e) {
            handleDispose();
            fCachedTextViewer = null;
            fCachedTextWidget = null;
        }
    });
    fMouseHandler = new MouseHandler();
    fCanvas.addMouseListener(fMouseHandler);
    fCanvas.addMouseMoveListener(fMouseHandler);
    fCanvas.addMouseWheelListener(fMouseHandler);
    if (fCachedTextViewer != null) {
        VisibleLinesTracker.track(fCachedTextViewer, lineHeightChangeHandler);
        fCachedTextViewer.addTextListener(fInternalListener);
        if (fFont == null) {
            if (fCachedTextWidget != null && !fCachedTextWidget.isDisposed())
                fFont = fCachedTextWidget.getFont();
        }
    }
    if (fFont != null)
        fCanvas.setFont(fFont);
    updateNumberOfDigits();
    computeIndentations();
    return fCanvas;
}

Example 54 with DisposeListener

use of org.eclipse.swt.events.DisposeListener in project knime-core by knime.

the class SubnodeLayoutJSONEditorPage method createControl.

/**
 * {@inheritDoc}
 */
@Override
public void createControl(final Composite parent) {
    TabFolder tabs = new TabFolder(parent, SWT.BORDER);
    TabItem usageTab = new TabItem(tabs, SWT.NONE);
    usageTab.setText("Node Usage");
    m_nodeUsageComposite = new NodeUsageComposite(tabs, m_viewNodes, m_subNodeContainer);
    usageTab.setControl(m_nodeUsageComposite);
    usageTab.addDisposeListener(new DisposeListener() {

        @Override
        public void widgetDisposed(final DisposeEvent e) {
            m_nodeUsageComposite = null;
        }
    });
    TabItem basicTab = new TabItem(tabs, SWT.NONE);
    basicTab.setText("Basic Layout");
    basicTab.setControl(createBasicComposite(tabs));
    TabItem jsonTab = new TabItem(tabs, SWT.NONE);
    jsonTab.setText("Advanced Layout");
    jsonTab.setControl(createJSONEditorComposite(tabs));
    setControl(tabs);
}

Example 55 with DisposeListener

use of org.eclipse.swt.events.DisposeListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_widgets_Widget method test_addDisposeListenerLorg_eclipse_swt_events_DisposeListener.

@Test
public void test_addDisposeListenerLorg_eclipse_swt_events_DisposeListener() {
    DisposeListener listener = e -> {
    };
    widget.addDisposeListener(listener);
    widget.removeDisposeListener(listener);
}