--- /dev/null
+/*
+ * Copyright (C) 2007 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.eclipse.adt.internal.editors.uimodel;
+
+import com.android.ide.eclipse.adt.internal.editors.descriptors.TextValueDescriptor;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.Text;
+
+/**
+ * Represents an XML element value in that can be modified using a simple text field
+ * in the XML editor's user interface.
+ */
+public class UiTextValueNode extends UiTextAttributeNode {
+
+ public UiTextValueNode(TextValueDescriptor attributeDescriptor, UiElementNode uiParent) {
+ super(attributeDescriptor, uiParent);
+ }
+
+ /**
+ * Updates the current text field's value when the XML has changed.
+ * <p/>
+ * The caller doesn't really know if value of the element has changed,
+ * so it will call this to refresh the value anyway. The value
+ * is only set if it has changed.
+ * <p/>
+ * This also resets the "dirty" flag.
+ */
+ @Override
+ public void updateValue(Node xml_attribute_node) {
+ setCurrentValue(DEFAULT_VALUE);
+
+ // The argument xml_attribute_node is not used here. It should always be
+ // null since this is not an attribute. What we want is the "text value" of
+ // the parent element, which is actually the first text node of the element.
+
+ UiElementNode parent = getUiParent();
+ if (parent != null) {
+ Node xml_node = parent.getXmlNode();
+ if (xml_node != null) {
+ for (Node xml_child = xml_node.getFirstChild();
+ xml_child != null;
+ xml_child = xml_child.getNextSibling()) {
+ if (xml_child.getNodeType() == Node.TEXT_NODE) {
+ setCurrentValue(xml_child.getNodeValue());
+ break;
+ }
+ }
+ }
+ }
+
+ if (isValid() && !getTextWidgetValue().equals(getCurrentValue())) {
+ try {
+ setInInternalTextModification(true);
+ setTextWidgetValue(getCurrentValue());
+ setDirty(false);
+ } finally {
+ setInInternalTextModification(false);
+ }
+ }
+ }
+
+ /* (non-java doc)
+ * Called by the user interface when the editor is saved or its state changed
+ * and the modified "attributes" must be committed (i.e. written) to the XML model.
+ */
+ @Override
+ public void commit() {
+ UiElementNode parent = getUiParent();
+ if (parent != null && isValid() && isDirty()) {
+ // Get (or create) the underlying XML element node that contains the value.
+ Node element = parent.prepareCommit();
+ if (element != null) {
+ String value = getTextWidgetValue();
+
+ // Try to find an existing text child to update.
+ boolean updated = false;
+
+ for (Node xml_child = element.getFirstChild();
+ xml_child != null;
+ xml_child = xml_child.getNextSibling()) {
+ if (xml_child.getNodeType() == Node.TEXT_NODE) {
+ xml_child.setNodeValue(value);
+ updated = true;
+ break;
+ }
+ }
+
+ // If we didn't find a text child to update, we need to create one.
+ if (!updated) {
+ Document doc = element.getOwnerDocument();
+ if (doc != null) {
+ Text text = doc.createTextNode(value);
+ element.appendChild(text);
+ }
+ }
+
+ setCurrentValue(value);
+ }
+ }
+ setDirty(false);
+ }
+}
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