| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php |
| * |
| * 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.ide.common.layout; |
| |
| import static com.android.SdkConstants.ANDROID_URI; |
| import static com.android.SdkConstants.ATTR_EMS; |
| import static com.android.SdkConstants.REQUEST_FOCUS; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.android.ide.common.api.IMenuCallback; |
| import com.android.ide.common.api.INode; |
| import com.android.ide.common.api.INodeHandler; |
| import com.android.ide.common.api.IViewRule; |
| import com.android.ide.common.api.InsertType; |
| import com.android.ide.common.api.RuleAction; |
| |
| import java.util.List; |
| |
| /** |
| * An {@link IViewRule} for android.widget.EditText. |
| */ |
| public class EditTextRule extends BaseViewRule { |
| |
| @Override |
| public void onCreate(@NonNull INode node, @NonNull INode parent, |
| @NonNull InsertType insertType) { |
| super.onCreate(node, parent, insertType); |
| |
| if (parent != null) { |
| INode focus = findFocus(findRoot(parent)); |
| if (focus == null) { |
| // Add <requestFocus> |
| node.appendChild(REQUEST_FOCUS); |
| } |
| |
| if (parent.getBounds().w >= 320) { |
| node.setAttribute(ANDROID_URI, ATTR_EMS, "10"); //$NON-NLS-1$ |
| } |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * Adds a "Request Focus" menu item. |
| */ |
| @Override |
| public void addContextMenuActions(@NonNull List<RuleAction> actions, |
| final @NonNull INode selectedNode) { |
| super.addContextMenuActions(actions, selectedNode); |
| |
| final boolean hasFocus = hasFocus(selectedNode); |
| final String label = hasFocus ? "Clear Focus" : "Request Focus"; |
| |
| IMenuCallback onChange = new IMenuCallback() { |
| @Override |
| public void action( |
| @NonNull RuleAction menuAction, |
| @NonNull List<? extends INode> selectedNodes, |
| @Nullable String valueId, |
| @Nullable Boolean newValue) { |
| selectedNode.editXml(label, new INodeHandler() { |
| @Override |
| public void handle(@NonNull INode node) { |
| INode focus = findFocus(findRoot(node)); |
| if (focus != null && focus.getParent() != null) { |
| focus.getParent().removeChild(focus); |
| } |
| if (!hasFocus) { |
| node.appendChild(REQUEST_FOCUS); |
| } |
| } |
| }); |
| } |
| }; |
| |
| actions.add(RuleAction.createAction("_setfocus", label, onChange, //$NON-NLS-1$ |
| null, 5, false /*supportsMultipleNodes*/)); |
| actions.add(RuleAction.createSeparator(7)); |
| } |
| |
| /** Returns true if the given node currently has focus */ |
| private static boolean hasFocus(INode node) { |
| INode focus = findFocus(node); |
| if (focus != null) { |
| return focus.getParent() == node; |
| } |
| |
| return false; |
| } |
| |
| /** Returns the root/top level node in the view hierarchy that contains the given node */ |
| private static INode findRoot(INode node) { |
| // First find the parent |
| INode root = node; |
| while (root != null) { |
| INode parent = root.getParent(); |
| if (parent == null) { |
| break; |
| } else { |
| root = parent; |
| } |
| } |
| |
| return root; |
| } |
| |
| /** Finds the focus node (not the node containing focus, but the actual request focus node |
| * under a given node */ |
| private static INode findFocus(INode node) { |
| if (node.getFqcn().equals(REQUEST_FOCUS)) { |
| return node; |
| } |
| |
| for (INode child : node.getChildren()) { |
| INode focus = findFocus(child); |
| if (focus != null) { |
| return focus; |
| } |
| } |
| return null; |
| } |
| |
| } |