Example usage for org.eclipse.jface.viewers IStructuredSelection getFirstElement

List of usage examples for org.eclipse.jface.viewers IStructuredSelection getFirstElement

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Introduction

In this page you can find the example usage for org.eclipse.jface.viewers IStructuredSelection getFirstElement.

Prototype

public Object getFirstElement();

Source Link

Document

Returns the first element in this selection, or null if the selection is empty.

Usage

From source file:com.aptana.ui.io.compare.FileStoreCompareEditorInput.java

License:Open Source License

@Override
public Viewer createDiffViewer(Composite parent) {
    fDiffViewer = new DiffTreeViewer(parent, getCompareConfiguration()) {

        @Override//from  w  ww .j  a  v  a  2  s .c o m
        protected void fillContextMenu(IMenuManager manager) {
            if (fOpenAction == null) {
                fOpenAction = new Action() {
                    public void run() {
                        handleOpen(null);
                    }
                };
                Utilities.initAction(fOpenAction, getBundle(), "action.CompareContents."); //$NON-NLS-1$
            }

            boolean enable = false;
            ISelection selection = getSelection();
            if (selection instanceof IStructuredSelection) {
                IStructuredSelection ss = (IStructuredSelection) selection;
                if (ss.size() == 1) {
                    Object element = ss.getFirstElement();
                    if (element instanceof MyDiffNode) {
                        ITypedElement typedElement = ((MyDiffNode) element).getId();
                        if (typedElement != null) {
                            enable = !ITypedElement.FOLDER_TYPE.equals(typedElement.getType());
                        }
                    } else {
                        enable = true;
                    }
                }
            }
            fOpenAction.setEnabled(enable);
            manager.add(fOpenAction);

            super.fillContextMenu(manager);
        }
    };
    return fDiffViewer;
}

From source file:com.aptana.ui.widgets.CListTable.java

License:Open Source License

/**
 * @param parent//from   www . j a va  2 s . c  om
 *            the parent composite
 * @param style
 *            the style bits
 */
public CListTable(Composite parent, int style) {
    super(parent, style);
    items = new ArrayList<Object>();
    listeners = new ArrayList<Listener>();

    setLayout(GridLayoutFactory.fillDefaults().create());

    descriptionLabel = new Label(this, SWT.WRAP);
    descriptionLabel.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());

    Composite buttons = new Composite(this, SWT.NONE);
    buttons.setLayout(GridLayoutFactory.fillDefaults().numColumns(3).create());
    buttons.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());

    addButton = new Button(buttons, SWT.PUSH);
    addButton.setToolTipText(StringUtil.ellipsify(CoreStrings.ADD));
    addButton.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            boolean itemAdded = false;
            Object newItem = null;
            for (Listener listener : listeners) {
                newItem = listener.addItem();
                if (newItem != null) {
                    items.add(newItem);
                    itemAdded = true;
                }
            }
            if (itemAdded) {
                tableViewer.refresh();
                tableViewer.setSelection(new StructuredSelection(newItem));
                for (Listener listener : listeners) {
                    listener.itemsChanged(getItems());
                }
            }
        }
    });
    addButton.setImage(SWTUtils.getImage(UIPlugin.getDefault(), "/icons/add.gif")); //$NON-NLS-1$

    editButton = new Button(buttons, SWT.PUSH);
    editButton.setToolTipText(StringUtil.ellipsify(CoreStrings.EDIT));
    editButton.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection();
            if (!selection.isEmpty()) {
                Object element = selection.getFirstElement();
                items.remove(element);
                Object newElement = null;
                boolean changed = false;
                for (Listener listener : listeners) {
                    newElement = listener.editItem(element);
                    if (newElement != null) {
                        items.add(newElement);
                        changed = true;
                    }
                }
                if (changed) {
                    tableViewer.refresh();
                    tableViewer.setSelection(new StructuredSelection(newElement));
                    for (Listener listener : listeners) {
                        listener.itemsChanged(getItems());
                    }
                }
            }
        }

    });
    editButton.setImage(SWTUtils.getImage(UIPlugin.getDefault(), "/icons/edit.png")); //$NON-NLS-1$

    removeButton = new Button(buttons, SWT.PUSH);
    removeButton.setToolTipText(CoreStrings.REMOVE);
    removeButton.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection();
            Object[] elements = selection.toArray();
            for (Object element : elements) {
                items.remove(element);
            }
            tableViewer.refresh();
            updateStates();
            for (Listener listener : listeners) {
                listener.itemsChanged(getItems());
            }
        }
    });
    removeButton.setImage(SWTUtils.getImage(UIPlugin.getDefault(), "/icons/delete.gif")); //$NON-NLS-1$

    createTable(this);
}

From source file:com.arc.cdt.debug.seecode.internal.ui.SeeCodeConfigPage.java

License:Open Source License

/**
 * Returns the current C element context from which to initialize default
 * settings, or <code>null</code> if none. Note, if possible we will
 * return the IBinary based on config entry as this may be more usefull then
 * just the project./* www  .j  a  v  a2  s  .  c o m*/
 * 
 * NOTE: this code was copied from AbstractCDebuggerTab that no longer
 * was accessible since the CDT folks refactored things (2/8/06)
 * 
 * @return C element context.
 */
public static ICElement getContext(ILaunchConfiguration config, String platform) {
    String projectName = null;
    String programName = null;
    IWorkbenchPage page = LaunchUIPlugin.getActivePage();
    Object obj = null;
    try {
        projectName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROJECT_NAME, (String) null);
        programName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, (String) null);
    } catch (CoreException e) {
    }
    if (projectName != null && !projectName.equals("")) { //$NON-NLS-1$
        IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName);
        ICProject cProject = CCorePlugin.getDefault().getCoreModel().create(project);
        if (cProject != null && cProject.exists()) {
            obj = cProject;
        }
    } else {
        if (page != null) {
            ISelection selection = page.getSelection();
            if (selection instanceof IStructuredSelection) {
                IStructuredSelection ss = (IStructuredSelection) selection;
                if (!ss.isEmpty()) {
                    obj = ss.getFirstElement();
                }
            }
        }
    }
    if (obj instanceof IResource) {
        ICElement ce = CoreModel.getDefault().create((IResource) obj);
        if (ce == null) {
            IProject pro = ((IResource) obj).getProject();
            ce = CoreModel.getDefault().create(pro);
        }
        obj = ce;
    }
    if (obj instanceof ICElement) {
        if (platform != null && !platform.equals("*")) { //$NON-NLS-1$
            ICDescriptor descriptor;
            try {
                descriptor = CCorePlugin.getDefault()
                        .getCProjectDescription(((ICElement) obj).getCProject().getProject(), false);
                if (descriptor != null) {
                    String projectPlatform = descriptor.getPlatform();
                    if (!projectPlatform.equals(platform) && !projectPlatform.equals("*")) { //$NON-NLS-1$
                        obj = null;
                    }
                }
            } catch (CoreException e) {
            }
        }
        if (obj != null) {
            if (programName == null || programName.equals("")) { //$NON-NLS-1$
                return (ICElement) obj;
            }
            ICElement ce = (ICElement) obj;
            IProject project;
            project = (IProject) ce.getCProject().getResource();
            IPath programFile;
            //<CUSTOMIZATION> handle absolute exe paths
            if (new File(programName).isAbsolute()) {
                programFile = new Path(programName);
            }
            //</CUSTOMIZATION>
            else {
                programFile = project.getFile(programName).getLocation();
            }
            ce = CCorePlugin.getDefault().getCoreModel().create(programFile);
            if (ce != null && ce.exists()) {
                return ce;
            }
            return (ICElement) obj;
        }
    }
    if (page != null) {
        IEditorPart part = page.getActiveEditor();
        if (part != null) {
            IEditorInput input = part.getEditorInput();
            return (ICElement) input.getAdapter(ICElement.class);
        }
    }
    return null;
}

From source file:com.arc.cdt.debug.seecode.internal.ui.SeeCodeMenuBarManager.java

License:Open Source License

/**
 * Called when the debug view selection changed. Refresh the SeeCode menus
 * if necessary.//from www.  j a  va 2s.com
 * 
 * @param selection
 */
private void setDebugViewSelection(ISelection selection) {
    if (selection != null && !selection.isEmpty() && selection instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) selection;
        Object o = ss.getFirstElement();
        if (!(o instanceof ILaunch) && !(o instanceof IStackFrame) && !(o instanceof IThread)
                && !(o instanceof IDebugTarget) && o instanceof IAdaptable) {
            IDebugTarget target = (IDebugTarget) ((IAdaptable) o).getAdapter(IDebugTarget.class);
            if (target != null)
                o = target;
            else {
                ILaunch launch = (ILaunch) ((IAdaptable) o).getAdapter(ILaunch.class);
                if (launch != null)
                    o = launch;
            }
        }
        if (o instanceof ILaunch) {
            IDebugTarget targets[] = ((ILaunch) o).getDebugTargets();
            if (targets != null && targets.length > 0) {
                // We assume all targets of a launch will have same session.
                o = targets[0];
            }
        }
        if (o instanceof IStackFrame) {
            o = ((IStackFrame) o).getThread();
        }
        if (o instanceof IThread) {
            o = ((IThread) o).getDebugTarget();
        }
        //To get the seecode engine interface, we extract
        // "session" object that should have an adapter for
        // EngineInterface.
        if (o instanceof IAdaptable) {
            ICDITarget target = (ICDITarget) ((IAdaptable) o).getAdapter(ICDITarget.class);
            // We don't want to "select" a session before its target is running.
            // If the engine is in the process of loading a program and
            // attempting to display an error box. A call back into the engine would deadlock. CR2140.
            if (target != null && target.isTerminated())
                target = null; // get rid of debug view if target terminated.
            setDebugTarget(target);
        } else
            setDebugTarget(null);
    } else {
        // NOTE: during animation, as stackframes change, the selection may go empty for a very short
        // time as an artifact of the Tree viewer. Ignore such a case by observing if the last thing
        // we were looking at is still active.
        if (mTarget == null || mTarget.isTerminated())
            setDebugTarget(null);
    }
}

From source file:com.arc.cdt.debug.seecode.ui.views.AbstractEngineBasedView.java

License:Open Source License

protected void setEngineSource(final IStructuredSelection selection) {
    if (fIsVisible && !selection.isEmpty()) {
        // At this point, we are NOT in the UI thread.
        final Object element = selection.getFirstElement();
        final EngineInterface engine = Utilities.computeEngineFromSelection(selection);
        if (engine != null) {
            // We may be making calls into the engine to get threads, stackframes, etc.
            // If we're the UI thread and the engine hangs then the whole GUI hangs.
            // Thus, we invoke it from another thread.
            if (Thread.currentThread() == mCards.getDisplay().getThread()) {
                engine.enqueue(new Runnable() {
                    @Override//  w w w .  java2 s  .  com
                    public void run() {
                        setEngineSourceInternal(element, engine);
                    }
                }, this);
                return;
            }
        }
        setEngineSourceInternal(element, engine);
    }
}

From source file:com.arc.cdt.debug.seecode.ui.views.SeeCodeCommandView.java

License:Open Source License

@Override
protected void setEngineSource(IStructuredSelection selection) {
    super.setEngineSource(selection);
    fSelectedSession = null;/*from w  w w . j  av  a 2  s  .  co  m*/
    //If we're actually referencing the Launch (i.e. no particular target), and
    // we have a multi-process session, then send commands to the CMPD controller
    // so that they can be broadcast to every process, subject to focus qualifications.
    if (!selection.isEmpty()) {
        // At this point, we are NOT in the UI thread.
        Object element = selection.getFirstElement();
        if (element instanceof ILaunch) {
            fSelectedSession = computeSessionFrom(element);
        } else {
            fCommandProcs.clear();
            for (Object select : selection.toList()) {
                EngineInterface engine = Utilities.computeEngineFromSelection(select);
                if (engine != null) {
                    ICommandProcessor cp = getCommandProcessor(engine);
                    if (!fCommandProcs.contains(cp))
                        fCommandProcs.add(cp);
                }
            }
        }
    }
}

From source file:com.archimatetool.editor.diagram.DiagramEditorFindReplaceProvider.java

License:Open Source License

private EditPart getFirstSelectedEditPart() {
    IStructuredSelection selection = (IStructuredSelection) fGraphicalViewer.getSelection();
    EditPart editPart = (EditPart) selection.getFirstElement();
    return (editPart instanceof AbstractDiagramPart) ? null : editPart;
}

From source file:com.archimatetool.editor.views.tree.actions.CloseModelAction.java

License:Open Source License

@Override
public void update(IStructuredSelection selection) {
    Object selected = selection.getFirstElement();
    setEnabled(selected instanceof IArchimateModel);
}

From source file:com.archimatetool.editor.views.tree.actions.NewFolderAction.java

License:Open Source License

@Override
public void update(IStructuredSelection selection) {
    Object selected = selection.getFirstElement();
    setEnabled(selected instanceof IFolder);
}

From source file:com.archimatetool.editor.views.tree.actions.OpenDiagramAction.java

License:Open Source License

@Override
public void update(IStructuredSelection selection) {
    Object selected = selection.getFirstElement();
    setEnabled(selected instanceof IDiagramModel);
}