Example usage for org.eclipse.jface.viewers ITreePathContentProvider getParents

Introduction

In this page you can find the example usage for org.eclipse.jface.viewers ITreePathContentProvider getParents.

Prototype

public TreePath[] getParents(Object element);

Source Link

Document

Return the possible parent paths for the given element.

Usage

From source file:org.eclipse.ui.internal.navigator.extensions.SafeDelegateTreeContentProvider.java

License:Open Source License

public TreePath[] getParents(Object element) {
    if (contentProvider instanceof ITreePathContentProvider) {
        ITreePathContentProvider tpcp = (ITreePathContentProvider) contentProvider;
        return tpcp.getParents(element);
    }/*from ww w  .jav  a2 s . c o m*/
    ArrayList segments = new ArrayList();
    Object parent = element;
    do {
        parent = contentProvider.getParent(parent);
        if (parent != null && parent != viewer.getInput())
            segments.add(0, parent);
    } while (parent != null && parent != viewer.getInput());
    if (!segments.isEmpty()) {
        // Loop backwards over the array to create the path.         
        return new TreePath[] { new TreePath(segments.toArray()) };
    }
    return NO_PATHS;
}

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From source file:org.eclipse.ui.internal.navigator.NavigatorSaveablesService.java

License:Open Source License

/** helper to compute the saveables for which elements are part of the tree.
 * Must be called from a synchronized method.
 * //  ww  w.  j  a  va2s.  com
 * @return the saveables
 */
private Saveable[] computeSaveables() {
    ITreeContentProvider contentProvider = (ITreeContentProvider) viewer.getContentProvider();
    boolean isTreepathContentProvider = contentProvider instanceof ITreePathContentProvider;
    Object viewerInput = viewer.getInput();
    List result = new ArrayList();
    Set roots = new HashSet(Arrays.asList(contentProvider.getElements(viewerInput)));
    SaveablesProvider[] saveablesProviders = getSaveablesProviders();
    for (int i = 0; i < saveablesProviders.length; i++) {
        SaveablesProvider saveablesProvider = saveablesProviders[i];
        Saveable[] saveables = saveablesProvider.getSaveables();
        for (int j = 0; j < saveables.length; j++) {
            Saveable saveable = saveables[j];
            Object[] elements = saveablesProvider.getElements(saveable);
            // the saveable is added to the result if at least one of the
            // elements representing the saveable appears in the tree, i.e.
            // if its parent chain leads to a root node.
            boolean foundRoot = false;
            for (int k = 0; !foundRoot && k < elements.length; k++) {
                Object element = elements[k];
                if (roots.contains(element)) {
                    result.add(saveable);
                    foundRoot = true;
                } else if (isTreepathContentProvider) {
                    ITreePathContentProvider treePathContentProvider = (ITreePathContentProvider) contentProvider;
                    TreePath[] parentPaths = treePathContentProvider.getParents(element);
                    for (int l = 0; !foundRoot && l < parentPaths.length; l++) {
                        TreePath parentPath = parentPaths[l];
                        for (int m = 0; !foundRoot && m < parentPath.getSegmentCount(); m++) {
                            if (roots.contains(parentPath.getSegment(m))) {
                                result.add(saveable);
                                foundRoot = true;
                            }
                        }
                    }
                } else {
                    while (!foundRoot && element != null) {
                        if (roots.contains(element)) {
                            // found a parent chain leading to a root. The
                            // saveable is part of the tree.
                            result.add(saveable);
                            foundRoot = true;
                        } else {
                            element = contentProvider.getParent(element);
                        }
                    }
                }
            }
        }
    }
    return (Saveable[]) result.toArray(new Saveable[result.size()]);
}

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From source file:org.eclipse.ui.internal.navigator.NavigatorSaveablesService.java

License:Open Source License

/**
 * @param selection/* w  w w.  ja v  a  2 s. com*/
 * @param provider
 * @return the active saveables
 */
private Saveable[] getActiveSaveablesFromTreePathProvider(IStructuredSelection selection,
        ITreePathContentProvider provider) {
    Set result = new HashSet();
    for (Iterator it = selection.iterator(); it.hasNext();) {
        Object element = it.next();
        Saveable saveable = getSaveable(element);
        if (saveable != null) {
            result.add(saveable);
        } else {
            TreePath[] paths = provider.getParents(element);
            saveable = findSaveable(paths);
            if (saveable != null) {
                result.add(saveable);
            }
        }
    }
    return (Saveable[]) result.toArray(new Saveable[result.size()]);
}

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From source file:rabbit.ui.internal.viewers.TreePathPatternFilter.java

License:Apache License

@Override
protected boolean isParentMatch(Viewer viewer, Object element) {
    ITreePathContentProvider provider = (ITreePathContentProvider) ((ContentViewer) viewer)
            .getContentProvider();// w w  w .j  av a2 s . com
    TreePath[] parents = provider.getParents(element);
    if (parents == null) {
        return false;
    }

    for (TreePath parent : parents) {
        Object[] children = provider.getChildren(parent);
        for (Object child : children) {
            if (child == element) {
                TreePath currentPath = parent.createChildPath(child);
                if (isMatch(viewer, currentPath)) {
                    return true;
                }
            }
        }
    }
    return false;
}

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From source file:rabbit.ui.internal.viewers.TreePathPatternFilterTest.java

License:Apache License

@Test
public void shouldHideTheElementIfTheLabelOfTheElementDoesNotMatchTheFilterText() {
    TreePath path = new TreePath(new Object[] { "parent", "child" });

    ITreePathContentProvider contentProvider = mock(ITreePathContentProvider.class);
    given(contentProvider.getChildren(path.getParentPath())).willReturn(new Object[] { path.getLastSegment() });
    given(contentProvider.getChildren(path)).willReturn(new Object[0]);
    given(contentProvider.getParents(path.getLastSegment()))
            .willReturn(new TreePath[] { path.getParentPath() });

    TreeViewer v = mock(TreeViewer.class);
    given(v.getContentProvider()).willReturn(contentProvider);

    filter.setPattern("not a match");
    assertThat(filter.isElementVisible(v, path.getLastSegment()), is(FALSE));
}

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From source file:rabbit.ui.internal.viewers.TreePathPatternFilterTest.java

License:Apache License

@Test
public void shouldShowTheElementIfTheLabelOfTheElementMatchesTheFilterText() {
    TreePath path = new TreePath(new Object[] { "parent", "child" });

    ITreePathContentProvider contentProvider = mock(ITreePathContentProvider.class);
    given(contentProvider.getChildren(path.getParentPath())).willReturn(new Object[] { path.getLastSegment() });
    given(contentProvider.getParents(path.getLastSegment()))
            .willReturn(new TreePath[] { path.getParentPath() });

    TreeViewer v = mock(TreeViewer.class);
    given(v.getContentProvider()).willReturn(contentProvider);

    filter.setPattern("child");
    assertThat(filter.isElementVisible(v, path.getLastSegment()), is(TRUE));
}

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