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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.LinkedList;
- import java.util.List;
-
- import com.google.gwt.event.shared.HandlerRegistration;
- import com.vaadin.terminal.gwt.client.ComponentConnector;
- import com.vaadin.terminal.gwt.client.ComponentContainerConnector;
- import com.vaadin.terminal.gwt.client.ConnectorHierarchyChangeEvent;
- import com.vaadin.terminal.gwt.client.ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler;
- import com.vaadin.terminal.gwt.client.Util;
- import com.vaadin.terminal.gwt.client.VConsole;
-
- public abstract class AbstractComponentContainerConnector extends
- AbstractComponentConnector implements ComponentContainerConnector,
- ConnectorHierarchyChangeHandler {
-
- List<ComponentConnector> children;
-
- private final boolean debugLogging = false;
-
- /**
- * Temporary storage for last enabled state to be able to see if it has
- * changed. Can be removed once we are able to listen specifically for
- * enabled changes in the state. Widget.isEnabled() cannot be used as all
- * Widgets do not implement HasEnabled
- */
- private boolean lastWidgetEnabledState = true;
-
- /**
- * Default constructor
- */
- public AbstractComponentContainerConnector() {
- addConnectorHierarchyChangeHandler(this);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.vaadin.terminal.gwt.client.ComponentContainerConnector#getChildren()
- */
- public List<ComponentConnector> getChildren() {
- if (children == null) {
- return new LinkedList<ComponentConnector>();
- }
-
- return children;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.vaadin.terminal.gwt.client.ComponentContainerConnector#setChildren
- * (java.util.Collection)
- */
- public void setChildren(List<ComponentConnector> children) {
- this.children = children;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.terminal.gwt.client.ComponentContainerConnector#
- * connectorHierarchyChanged
- * (com.vaadin.terminal.gwt.client.ConnectorHierarchyChangedEvent)
- */
- public void onConnectorHierarchyChange(ConnectorHierarchyChangeEvent event) {
- if (debugLogging) {
- VConsole.log("Hierarchy changed for "
- + Util.getConnectorString(this));
- String oldChildren = "* Old children: ";
- for (ComponentConnector child : event.getOldChildren()) {
- oldChildren += Util.getConnectorString(child) + " ";
- }
- VConsole.log(oldChildren);
-
- String newChildren = "* New children: ";
- for (ComponentConnector child : getChildren()) {
- newChildren += Util.getConnectorString(child) + " ";
- }
- VConsole.log(newChildren);
- }
- }
-
- public HandlerRegistration addConnectorHierarchyChangeHandler(
- ConnectorHierarchyChangeHandler handler) {
- return ensureHandlerManager().addHandler(
- ConnectorHierarchyChangeEvent.TYPE, handler);
- }
-
- @Override
- public void setWidgetEnabled(boolean widgetEnabled) {
- if (lastWidgetEnabledState == widgetEnabled) {
- return;
- }
- lastWidgetEnabledState = widgetEnabled;
-
- super.setWidgetEnabled(widgetEnabled);
- for (ComponentConnector c : getChildren()) {
- // Update children as they might be affected by the enabled state of
- // their parent
- c.setWidgetEnabled(c.isEnabled());
- }
- }
- }
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