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

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:ca.mcgill.cs.swevo.qualyzer.providers.TreeDragListener.java

License:Open Source License

/**
 * Builds the drag data so that the drop listener knows it's coming from the tree and can build the node.
 *//* www. j av a 2 s .co m*/
@Override
public void dragSetData(DragSourceEvent event) {
    if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
        IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
        Node node = (Node) selection.getFirstElement();

        String data = node.getPersistenceId() + SPLIT + node.getPathToRoot();
        event.data = data;
    }
}

From source file:ca.mcgill.cs.swevo.qualyzer.providers.TreeDragListener.java

License:Open Source License

/**
 * Sets the selection transfer so that the validate drop method can work.
 *///from   ww  w. ja  va  2s .  co m
@Override
public void dragStart(DragSourceEvent event) {
    IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
    Node node = (Node) selection.getFirstElement();
    String data = node.getPersistenceId() + SPLIT + node.getPathToRoot();

    LocalSelectionTransfer tran = LocalSelectionTransfer.getTransfer();
    tran.setSelection(new StructuredSelection(data));

}

From source file:ca.mcgill.cs.swevo.qualyzer.providers.TreeDropListener.java

License:Open Source License

/**
 * Verifies that the drop is allowed by checking for cycles and duplicates.
 *///from   w  ww . ja va  2  s  .  c  om
@Override
public boolean validateDrop(Object target, int operation, TransferData transferType) {
    LocalSelectionTransfer sel = LocalSelectionTransfer.getTransfer();
    IStructuredSelection selection = (IStructuredSelection) sel.getSelection();

    Node nTarget = (Node) target;
    if (nTarget == null) {
        nTarget = (Node) fViewer.getInput();
    }

    String data = (String) selection.getFirstElement();
    String[] values = data.split(SPLIT);
    Long id = null;

    boolean valid = true;

    if (nTarget != null) {
        if (values.length == TABLE_DATA_SIZE) {
            id = Long.parseLong(values[1]);

            //if(hardCycleExists(nTarget, id, fPage.getTreeModel()))
            if (containsCycle(id, nTarget)) {
                valid = false;
            }
        } else if (values.length == TREE_DATA_SIZE) {
            id = Long.parseLong(values[0]);

            Node node = findNode(values[1], id);

            if (depthFirstContainsCycle(node, nTarget)) {
                valid = false;
            }
        }

        Node child = nTarget.getChild(id);
        if (child != null) {
            valid = false;
        }

        return valid && TextTransfer.getInstance().isSupportedType(transferType);
    }
    return false;
}

From source file:ca.mcgill.sable.soot.editors.JimpleContentOutlinePage.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    if (!selection.isEmpty()) {
        Object elem = selection.getFirstElement();
        if (elem instanceof JimpleOutlineObject) {
            String toHighlight = ((JimpleOutlineObject) elem).getLabel();
            int start = getJimpleFileParser().getStartOfSelected(toHighlight);
            int length = getJimpleFileParser().getLength(toHighlight);
            getEd().selectAndReveal(start, length);
        }//from  w  ww .  j  a v  a 2s . c  om
    }
}

From source file:ca.mcgill.sable.soot.ui.AbstractOptionsDialog.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    if (!selection.isEmpty()) {
        Object elem = selection.getFirstElement();
        if (elem instanceof SootOption) {
            SootOption sel = (SootOption) elem;
            Control[] children = getPageContainer().getChildren();
            String childTitle = null;
            for (int i = 0; i < children.length; i++) {

                if (children[i] instanceof Composite) {
                    if (children[i] instanceof Group) {
                        childTitle = (String) ((Group) children[i]).getData("id");

                    }/*  w  w  w  .  j a  v a 2 s . co m*/
                    if (childTitle.compareTo(sel.getAlias()) == 0) {
                        ((StackLayout) getPageContainer().getLayout()).topControl = children[i];
                        getPageContainer().layout();

                    } else {
                        children[i].setVisible(false);
                    }
                }
            }
        }
    }
}

From source file:ca.mcgill.sable.soot.ui.AnalysisVisManipDialog.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    if (selection.isEmpty()) {
        checkTypes.setInput(getCheckInput(""));
    } else {/*  www.  jav a  2  s .c  o  m*/
        Object elem = selection.getFirstElement();
        if (!(elem instanceof IFile))
            return;
        ArrayList list = (ArrayList) getCheckInput(elem);
        handleLast();
        checkTypes.setInput(list);
        Object[] checkElems;
        if ((currentSettingsMap != null) && (currentSettingsMap.containsKey(elem))) {
            checkElems = (Object[]) currentSettingsMap.get(elem);
            checkTypes.setCheckedElements(checkElems);
        } else {
            SootAttributesHandler handler = getHandlerForFile((IFile) elem);
            if (handler != null) {
                if (handler.isShowAllTypes()) {
                    if (list != null) {
                        Object[] elems = new Object[list.size()];

                        for (int i = 0; i < list.size(); i++) {
                            elems[i] = checkTypes.getElementAt(i);

                        }
                        checkTypes.setCheckedElements(elems);
                    }
                } else {
                    Iterator it = handler.getTypesToShow().iterator();
                    Object[] elems = new Object[handler.getTypesToShow().size()];
                    int i = 0;
                    while (it.hasNext()) {
                        elems[i] = it.next();
                        i++;
                    }
                    checkTypes.setCheckedElements(elems);

                }
            }
        }
        if (getAllSelected() == null) {
            setAllSelected(new ArrayList());
        }
        getAllSelected().add(elem);
    }
}

From source file:ca.mcgill.sable.soot.ui.SootConfigManagerDialog.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    if (!selection.isEmpty()) {
        Object elem = selection.getFirstElement();
        if (elem instanceof SootConfiguration) {
            SootConfiguration sel = (SootConfiguration) elem;
            setSelected(sel.getLabel());
        }// w w  w. ja v a 2s  .  c o m
        enableButtons();
    }
}

From source file:ca.uvic.chisel.diver.mylyn.logger.logging.PageSelectionListener.java

License:Open Source License

/**
 * @param selection//from  ww  w . j  ava  2  s. co m
 * @return
 */
private Object getSelectionObject(IWorkbenchPart part, ISelection selection) {
    if (selection instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) selection;
        if (!ss.isEmpty()) {
            Object o = ss.getFirstElement();
            if (o instanceof IJavaElement) {
                return o;
            } else if (o instanceof ITraceModel) {
                return o;
            }
        }
    } else if (selection instanceof ITextSelection) {
        ITextSelection ts = (ITextSelection) selection;
        if (part instanceof ITextEditor) {
            ITextEditor editor = (ITextEditor) part;
            ITypeRoot typeRoot = null;
            IEditorInput input = editor.getEditorInput();
            //using internal stuff, but I don't care
            if (input instanceof IClassFileEditorInput) {
                typeRoot = ((IClassFileEditorInput) input).getClassFile();
            } else if (input instanceof IFileEditorInput) {
                IFile file = ((IFileEditorInput) input).getFile();
                IJavaElement element = JavaCore.create(file);
                if (element instanceof ITypeRoot) {
                    typeRoot = (ITypeRoot) element;
                }
            }
            if (typeRoot != null) {
                IType type = typeRoot.findPrimaryType();
                if (type != null) {
                    try {
                        IJavaElement je = typeRoot.getElementAt(ts.getOffset());
                        return je;
                    } catch (JavaModelException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
        }
    }
    return null;
}

From source file:ca.uvic.chisel.javasketch.ui.internal.presentation.BreadCrumbHook.java

License:Open Source License

@Override
public void selectionChanged(SelectionChangedEvent event) {
    if (event.getSelection() instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) event.getSelection();
        Object element = ss.getFirstElement();
        IActivation newRoot = null;/* ww w  .j a v a2s  .c  om*/
        if (element instanceof ICall) {
            try {
                if (((ICall) element).getActivation() != null) {
                    newRoot = ((ICall) element).getTarget().getActivation();
                }
            } catch (NullPointerException e) {
            }
        }
        if (newRoot == null) {
            newRoot = ((IThread) viewer.getInput()).getRoot().getActivation();
        }
        viewer.setRootActivation(newRoot);
    }

}

From source file:ca.uvic.chisel.javasketch.ui.internal.presentation.commands.ToggleSketchActivationHandler.java

License:Open Source License

/**
 * @param selection//from   w  ww.  java 2 s. c  o m
 * @return
 */
private IProgramSketch getSelectedSketch(ISelection selection) {
    if (selection instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) selection;
        if (ss.getFirstElement() instanceof IProgramSketch) {
            return (IProgramSketch) ss.getFirstElement();
        }
    }
    return null;
}