--- /dev/null
+/*
+ * Copyright (C) 2007 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.ddmuilib.explorer;
+
+import com.android.ddmlib.FileListingService;
+import com.android.ddmlib.FileListingService.FileEntry;
+import com.android.ddmlib.FileListingService.IListingReceiver;
+
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.TreeViewer;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Tree;
+
+/**
+ * Content provider class for device Explorer.
+ */
+class DeviceContentProvider implements ITreeContentProvider {
+
+ private TreeViewer mViewer;
+ private FileListingService mFileListingService;
+ private FileEntry mRootEntry;
+
+ private IListingReceiver sListingReceiver = new IListingReceiver() {
+ public void setChildren(final FileEntry entry, FileEntry[] children) {
+ final Tree t = mViewer.getTree();
+ if (t != null && t.isDisposed() == false) {
+ Display display = t.getDisplay();
+ if (display.isDisposed() == false) {
+ display.asyncExec(new Runnable() {
+ public void run() {
+ if (t.isDisposed() == false) {
+ // refresh the entry.
+ mViewer.refresh(entry);
+
+ // force it open, since on linux and windows
+ // when getChildren() returns null, the node is
+ // not considered expanded.
+ mViewer.setExpandedState(entry, true);
+ }
+ }
+ });
+ }
+ }
+ }
+
+ public void refreshEntry(final FileEntry entry) {
+ final Tree t = mViewer.getTree();
+ if (t != null && t.isDisposed() == false) {
+ Display display = t.getDisplay();
+ if (display.isDisposed() == false) {
+ display.asyncExec(new Runnable() {
+ public void run() {
+ if (t.isDisposed() == false) {
+ // refresh the entry.
+ mViewer.refresh(entry);
+ }
+ }
+ });
+ }
+ }
+ }
+ };
+
+ /**
+ *
+ */
+ public DeviceContentProvider() {
+ }
+
+ public void setListingService(FileListingService fls) {
+ mFileListingService = fls;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
+ */
+ public Object[] getChildren(Object parentElement) {
+ if (parentElement instanceof FileEntry) {
+ FileEntry parentEntry = (FileEntry)parentElement;
+
+ Object[] oldEntries = parentEntry.getCachedChildren();
+ Object[] newEntries = mFileListingService.getChildren(parentEntry,
+ true, sListingReceiver);
+
+ if (newEntries != null) {
+ return newEntries;
+ } else {
+ // if null was returned, this means the cache was not valid,
+ // and a thread was launched for ls. sListingReceiver will be
+ // notified with the new entries.
+ return oldEntries;
+ }
+ }
+ return new Object[0];
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
+ */
+ public Object getParent(Object element) {
+ if (element instanceof FileEntry) {
+ FileEntry entry = (FileEntry)element;
+
+ return entry.getParent();
+ }
+ return null;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
+ */
+ public boolean hasChildren(Object element) {
+ if (element instanceof FileEntry) {
+ FileEntry entry = (FileEntry)element;
+
+ return entry.getType() == FileListingService.TYPE_DIRECTORY;
+ }
+ return false;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
+ */
+ public Object[] getElements(Object inputElement) {
+ if (inputElement instanceof FileEntry) {
+ FileEntry entry = (FileEntry)inputElement;
+ if (entry.isRoot()) {
+ return getChildren(mRootEntry);
+ }
+ }
+
+ return null;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.IContentProvider#dispose()
+ */
+ public void dispose() {
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
+ */
+ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+ if (viewer instanceof TreeViewer) {
+ mViewer = (TreeViewer)viewer;
+ }
+ if (newInput instanceof FileEntry) {
+ mRootEntry = (FileEntry)newInput;
+ }
+ }
+}
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