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UiTextValueNode.javaAPI DocAndroid 1.5 API4353Wed May 06 22:41:10 BST 2009com.android.ide.eclipse.editors.uimodel

UiTextValueNode

public class UiTextValueNode extends UiTextAttributeNode
Represents an XML element value in that can be modified using a simple text field in the XML editor's user interface.

Fields Summary
Constructors Summary
public UiTextValueNode(com.android.ide.eclipse.editors.descriptors.TextValueDescriptor attributeDescriptor, UiElementNode uiParent)

        super(attributeDescriptor, uiParent);
Methods Summary
public voidcommit()

        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);
public voidupdateValue(org.w3c.dom.Node xml_attribute_node)
Updates the current text field's value when the XML has changed.

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.

This also resets the "dirty" flag.

        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);
            }
        }