| /*=============================================================================# |
| # Copyright (c) 2005, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ecommons.ui.dialogs.groups; |
| |
| import org.eclipse.jface.viewers.AbstractTreeViewer; |
| import org.eclipse.jface.viewers.DoubleClickEvent; |
| import org.eclipse.jface.viewers.IContentProvider; |
| import org.eclipse.jface.viewers.IDoubleClickListener; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.ScrollBar; |
| import org.eclipse.swt.widgets.Scrollable; |
| |
| import org.eclipse.statet.ecommons.ui.util.PixelConverter; |
| import org.eclipse.statet.ecommons.ui.util.UIAccess; |
| |
| |
| public abstract class CategorizedOptionsGroup<ItemT extends CategorizedOptionsGroup.CategorizedItem> |
| extends StructuredSelectionOptionsGroup<TreeViewer, ItemT> { |
| |
| |
| public static class CategorizedItem { |
| |
| private int fCategoryIndex; |
| private final String fName; |
| |
| public CategorizedItem(final String name) { |
| |
| this.fName = name; |
| } |
| |
| public String getName() { |
| |
| return this.fName; |
| } |
| |
| protected void setCategory(final int index) { |
| |
| this.fCategoryIndex = index; |
| } |
| |
| public int getCategoryIndex() { |
| |
| return this.fCategoryIndex; |
| } |
| } |
| |
| private class CategorizedItemLabelProvider extends LabelProvider { |
| |
| @Override |
| public String getText(final Object element) { |
| if (element instanceof String) { |
| return (String) element; |
| } |
| return ((CategorizedItem) element).getName(); // ItemT |
| } |
| } |
| |
| private class CategorizedItemContentProvider implements ITreeContentProvider { |
| |
| @Override |
| public void dispose() { |
| } |
| |
| @Override |
| public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) { |
| } |
| |
| @Override |
| public Object[] getElements(final Object inputElement) { |
| |
| return CategorizedOptionsGroup.this.fCategorys; |
| } |
| |
| @Override |
| public boolean hasChildren(final Object element) { |
| |
| return element instanceof String; |
| } |
| |
| @Override |
| public Object[] getChildren(final Object parentElement) { |
| |
| if (parentElement instanceof String) { |
| final int idx = getIndexOfCategory(parentElement); |
| return CategorizedOptionsGroup.this.fCategoryChilds[idx]; |
| } |
| |
| return new Object[0]; |
| } |
| |
| @Override |
| public Object getParent(final Object element) { |
| |
| if (element instanceof String) { |
| return null; |
| } |
| |
| final int idx = ((CategorizedItem) element).getCategoryIndex(); |
| return CategorizedOptionsGroup.this.fCategorys[idx]; |
| } |
| } |
| |
| public String[] fCategorys; |
| public ItemT[][] fCategoryChilds; |
| |
| public CategorizedOptionsGroup(final boolean grabSelectionHorizontal, final boolean grabVertical) { |
| super(grabSelectionHorizontal, grabVertical); |
| } |
| |
| @Override |
| protected TreeViewer createSelectionViewer(final Composite parent) { |
| |
| final TreeViewer viewer = new TreeViewer(parent, SWT.BORDER | SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); |
| viewer.setLabelProvider(new CategorizedItemLabelProvider()); |
| |
| return viewer; |
| } |
| |
| @Override |
| protected GridData createSelectionGridData() { |
| |
| final GridData gd = super.createSelectionGridData(); |
| |
| final Control control = getStructuredViewer().getControl(); |
| final PixelConverter pixel = new PixelConverter(control); |
| gd.heightHint = pixel.convertHeightInCharsToPixels(9); |
| int maxWidth = 0; |
| for (final CategorizedItem item : getListModel()) { |
| maxWidth = Math.max(maxWidth, pixel.convertWidthInCharsToPixels(item.getName().length())); |
| } |
| final ScrollBar vBar = ((Scrollable) control).getVerticalBar(); |
| if (vBar != null) |
| { |
| maxWidth += vBar.getSize().x * 4; // scrollbars and tree indentation guess |
| } |
| gd.widthHint = maxWidth; |
| |
| return gd; |
| } |
| |
| @Override |
| protected IContentProvider createContentProvider() { |
| |
| return new CategorizedItemContentProvider(); |
| } |
| |
| @Override |
| protected IDoubleClickListener createDoubleClickListener() { |
| |
| return new IDoubleClickListener() { |
| @Override |
| public void doubleClick(final DoubleClickEvent event) { |
| final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); |
| if (selection != null && selection.size() == 1) { |
| final Object item = selection.getFirstElement(); |
| if (item instanceof String) { |
| if (getStructuredViewer().getExpandedState(item)) { |
| getStructuredViewer().collapseToLevel(item, AbstractTreeViewer.ALL_LEVELS); |
| } |
| else { |
| getStructuredViewer().expandToLevel(item, 1); |
| } |
| } |
| else { |
| handleDoubleClick(getSingleItem(selection), selection); |
| } |
| } |
| } |
| }; |
| } |
| |
| @Override |
| public void initFields() { |
| super.initFields(); |
| |
| getStructuredViewer().getControl().getDisplay().asyncExec(new Runnable() { |
| @Override |
| public void run() { |
| final TreeViewer viewer = getStructuredViewer(); |
| if (viewer != null && UIAccess.isOkToUse(viewer)) { |
| viewer.setSelection(new StructuredSelection(CategorizedOptionsGroup.this.fCategorys[0])); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public ItemT getSingleItem(final IStructuredSelection selection) { |
| |
| if (selection.getFirstElement() instanceof String) { |
| return null; |
| } |
| return super.getSingleItem(selection); |
| } |
| |
| |
| public void generateListModel() { |
| |
| for (int i = 0; i < this.fCategorys.length; i++) { |
| for (int j = 0; j < this.fCategoryChilds[i].length; j++) { |
| this.fCategoryChilds[i][j].setCategory(i); |
| getListModel().add(this.fCategoryChilds[i][j]); |
| } |
| } |
| } |
| |
| public int getIndexOfCategory(final Object category) { |
| |
| for (int i = 0; i < this.fCategorys.length; i++) { |
| if (this.fCategorys[i] == category) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| } |