diff options
Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/EditTextRule.java')
-rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/EditTextRule.java | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/EditTextRule.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/EditTextRule.java new file mode 100644 index 000000000..03a5bc04e --- /dev/null +++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/EditTextRule.java @@ -0,0 +1,139 @@ +/* + * 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; + } + +} |