Java tutorial
/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.hierarchyviewerlib.ui; import com.android.ddmuilib.ImageLoader; import com.android.hierarchyviewerlib.HierarchyViewerDirector; import com.android.hierarchyviewerlib.device.IHvDevice; import com.android.hierarchyviewerlib.models.DeviceSelectionModel; import com.android.hierarchyviewerlib.models.DeviceSelectionModel.IWindowChangeListener; import com.android.hierarchyviewerlib.models.Window; import org.eclipse.jface.viewers.IFontProvider; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TreeSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ControlAdapter; import org.eclipse.swt.events.ControlEvent; import org.eclipse.swt.events.ControlListener; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class DeviceSelector extends Composite implements IWindowChangeListener, SelectionListener { private TreeViewer mTreeViewer; private Tree mTree; private DeviceSelectionModel mModel; private Font mBoldFont; private Image mDeviceImage; private Image mEmulatorImage; private final static int ICON_WIDTH = 16; private boolean mDoTreeViewStuff; private boolean mDoPixelPerfectStuff; private class ContentProvider implements ITreeContentProvider, ILabelProvider, IFontProvider { @Override public Object[] getChildren(Object parentElement) { if (parentElement instanceof IHvDevice && mDoTreeViewStuff) { Window[] list = mModel.getWindows((IHvDevice) parentElement); if (list != null) { return list; } } return new Object[0]; } @Override public Object getParent(Object element) { if (element instanceof Window) { return ((Window) element).getDevice(); } return null; } @Override public boolean hasChildren(Object element) { if (element instanceof IHvDevice && mDoTreeViewStuff) { Window[] list = mModel.getWindows((IHvDevice) element); if (list != null) { return list.length != 0; } } return false; } @Override public Object[] getElements(Object inputElement) { if (inputElement instanceof DeviceSelectionModel) { return mModel.getDevices(); } return new Object[0]; } @Override public void dispose() { // pass } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // pass } @Override public Image getImage(Object element) { if (element instanceof IHvDevice) { if (((IHvDevice) element).getDevice().isEmulator()) { return mEmulatorImage; } return mDeviceImage; } return null; } @Override public String getText(Object element) { if (element instanceof IHvDevice) { return ((IHvDevice) element).getDevice().getName(); } else if (element instanceof Window) { return ((Window) element).getTitle(); } return null; } @Override public Font getFont(Object element) { if (element instanceof Window) { int focusedWindow = mModel.getFocusedWindow(((Window) element).getHvDevice()); if (focusedWindow == ((Window) element).getHashCode()) { return mBoldFont; } } return null; } @Override public void addListener(ILabelProviderListener listener) { // pass } @Override public boolean isLabelProperty(Object element, String property) { // pass return false; } @Override public void removeListener(ILabelProviderListener listener) { // pass } } public DeviceSelector(Composite parent, boolean doTreeViewStuff, boolean doPixelPerfectStuff) { super(parent, SWT.NONE); this.mDoTreeViewStuff = doTreeViewStuff; this.mDoPixelPerfectStuff = doPixelPerfectStuff; setLayout(new FillLayout()); mTreeViewer = new TreeViewer(this, SWT.SINGLE); mTreeViewer.setAutoExpandLevel(TreeViewer.ALL_LEVELS); mTree = mTreeViewer.getTree(); mTree.setLinesVisible(true); mTree.addSelectionListener(this); addDisposeListener(mDisposeListener); loadResources(); mModel = DeviceSelectionModel.getModel(); ContentProvider contentProvider = new ContentProvider(); mTreeViewer.setContentProvider(contentProvider); mTreeViewer.setLabelProvider(contentProvider); mModel.addWindowChangeListener(this); mTreeViewer.setInput(mModel); addControlListener(mControlListener); } public void loadResources() { Display display = Display.getDefault(); Font systemFont = display.getSystemFont(); FontData[] fontData = systemFont.getFontData(); FontData[] newFontData = new FontData[fontData.length]; for (int i = 0; i < fontData.length; i++) { newFontData[i] = new FontData(fontData[i].getName(), fontData[i].getHeight(), fontData[i].getStyle() | SWT.BOLD); } mBoldFont = new Font(Display.getDefault(), newFontData); ImageLoader loader = ImageLoader.getDdmUiLibLoader(); mDeviceImage = loader.loadImage(display, "device.png", ICON_WIDTH, ICON_WIDTH, display //$NON-NLS-1$ .getSystemColor(SWT.COLOR_RED)); mEmulatorImage = loader.loadImage(display, "emulator.png", ICON_WIDTH, ICON_WIDTH, display //$NON-NLS-1$ .getSystemColor(SWT.COLOR_BLUE)); } private DisposeListener mDisposeListener = new DisposeListener() { @Override public void widgetDisposed(DisposeEvent e) { mModel.removeWindowChangeListener(DeviceSelector.this); mBoldFont.dispose(); } }; // If the window gets too small, hide the data, otherwise SWT throws an // ERROR. private ControlListener mControlListener = new ControlAdapter() { private boolean noInput = false; @Override public void controlResized(ControlEvent e) { if (getBounds().height <= 38) { mTreeViewer.setInput(null); noInput = true; } else if (noInput) { mTreeViewer.setInput(mModel); noInput = false; } } }; @Override public boolean setFocus() { return mTree.setFocus(); } public void setMode(boolean doTreeViewStuff, boolean doPixelPerfectStuff) { if (this.mDoTreeViewStuff != doTreeViewStuff || this.mDoPixelPerfectStuff != doPixelPerfectStuff) { final boolean expandAll = !this.mDoTreeViewStuff && doTreeViewStuff; this.mDoTreeViewStuff = doTreeViewStuff; this.mDoPixelPerfectStuff = doPixelPerfectStuff; Display.getDefault().syncExec(new Runnable() { @Override public void run() { mTreeViewer.refresh(); if (expandAll) { mTreeViewer.expandAll(); } } }); } } @Override public void deviceConnected(final IHvDevice device) { Display.getDefault().syncExec(new Runnable() { @Override public void run() { mTreeViewer.refresh(); mTreeViewer.setExpandedState(device, true); } }); } @Override public void deviceChanged(final IHvDevice device) { Display.getDefault().syncExec(new Runnable() { @Override public void run() { TreeSelection selection = (TreeSelection) mTreeViewer.getSelection(); mTreeViewer.refresh(device); if (selection.getFirstElement() instanceof Window && ((Window) selection.getFirstElement()).getDevice() == device) { mTreeViewer.setSelection(selection, true); } } }); } @Override public void deviceDisconnected(final IHvDevice device) { Display.getDefault().syncExec(new Runnable() { @Override public void run() { mTreeViewer.refresh(); } }); } @Override public void focusChanged(final IHvDevice device) { Display.getDefault().syncExec(new Runnable() { @Override public void run() { TreeSelection selection = (TreeSelection) mTreeViewer.getSelection(); mTreeViewer.refresh(device); if (selection.getFirstElement() instanceof Window && ((Window) selection.getFirstElement()).getDevice() == device) { mTreeViewer.setSelection(selection, true); } } }); } @Override public void selectionChanged(IHvDevice device, Window window) { // pass } @Override public void widgetDefaultSelected(SelectionEvent e) { Object selection = ((TreeItem) e.item).getData(); if (selection instanceof IHvDevice && mDoPixelPerfectStuff) { HierarchyViewerDirector.getDirector().loadPixelPerfectData((IHvDevice) selection); } else if (selection instanceof Window && mDoTreeViewStuff) { HierarchyViewerDirector.getDirector().loadViewTreeData((Window) selection); } } @Override public void widgetSelected(SelectionEvent e) { TreeItem item = (TreeItem) e.item; if (item == null) return; Object selection = item.getData(); if (selection instanceof IHvDevice) { mModel.setSelection((IHvDevice) selection, null); } else if (selection instanceof Window) { mModel.setSelection(((Window) selection).getHvDevice(), (Window) selection); } } }