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- /*
- * Copyright 2000-2013 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
- *
- * 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.vaadin.client.ui.tree;
-
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.Map;
-
- import com.google.gwt.aria.client.Roles;
- import com.google.gwt.dom.client.Element;
- import com.vaadin.client.ApplicationConnection;
- import com.vaadin.client.BrowserInfo;
- import com.vaadin.client.Paintable;
- import com.vaadin.client.TooltipInfo;
- import com.vaadin.client.UIDL;
- import com.vaadin.client.Util;
- import com.vaadin.client.VConsole;
- import com.vaadin.client.communication.StateChangeEvent;
- import com.vaadin.client.ui.AbstractComponentConnector;
- import com.vaadin.client.ui.VTree;
- import com.vaadin.client.ui.VTree.TreeNode;
- import com.vaadin.shared.ui.Connect;
- import com.vaadin.shared.ui.MultiSelectMode;
- import com.vaadin.shared.ui.tree.TreeConstants;
- import com.vaadin.shared.ui.tree.TreeState;
- import com.vaadin.ui.Tree;
-
- @Connect(Tree.class)
- public class TreeConnector extends AbstractComponentConnector implements
- Paintable {
-
- protected final Map<TreeNode, TooltipInfo> tooltipMap = new HashMap<TreeNode, TooltipInfo>();
-
- @Override
- protected void init() {
- getWidget().connector = this;
- }
-
- @Override
- public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
- if (!isRealUpdate(uidl)) {
- return;
- }
-
- getWidget().rendering = true;
-
- getWidget().client = client;
-
- if (uidl.hasAttribute("partialUpdate")) {
- handleUpdate(uidl);
- getWidget().rendering = false;
- return;
- }
-
- getWidget().paintableId = uidl.getId();
-
- getWidget().immediate = getState().immediate;
-
- getWidget().disabled = !isEnabled();
- getWidget().readonly = isReadOnly();
-
- getWidget().dragMode = uidl.hasAttribute("dragMode") ? uidl
- .getIntAttribute("dragMode") : 0;
-
- getWidget().isNullSelectionAllowed = uidl
- .getBooleanAttribute("nullselect");
-
- if (uidl.hasAttribute("alb")) {
- getWidget().bodyActionKeys = uidl.getStringArrayAttribute("alb");
- }
-
- getWidget().body.clear();
- // clear out any references to nodes that no longer are attached
- getWidget().clearNodeToKeyMap();
- tooltipMap.clear();
-
- TreeNode childTree = null;
- UIDL childUidl = null;
- for (final Iterator<?> i = uidl.getChildIterator(); i.hasNext();) {
- childUidl = (UIDL) i.next();
- if ("actions".equals(childUidl.getTag())) {
- updateActionMap(childUidl);
- continue;
- } else if ("-ac".equals(childUidl.getTag())) {
- getWidget().updateDropHandler(childUidl);
- continue;
- }
- childTree = getWidget().new TreeNode();
- getConnection().getVTooltip().connectHandlersToWidget(childTree);
- updateNodeFromUIDL(childTree, childUidl, 1);
- getWidget().body.add(childTree);
- childTree.addStyleDependentName("root");
- childTree.childNodeContainer.addStyleDependentName("root");
- }
- if (childTree != null && childUidl != null) {
- boolean leaf = !childUidl.getTag().equals("node");
- childTree.addStyleDependentName(leaf ? "leaf-last" : "last");
- childTree.childNodeContainer.addStyleDependentName("last");
- }
- final String selectMode = uidl.getStringAttribute("selectmode");
- getWidget().selectable = !"none".equals(selectMode);
- getWidget().isMultiselect = "multi".equals(selectMode);
-
- if (getWidget().isMultiselect) {
- Roles.getTreeRole().setAriaMultiselectableProperty(
- getWidget().getElement(), true);
-
- if (BrowserInfo.get().isTouchDevice()) {
- // Always use the simple mode for touch devices that do not have
- // shift/ctrl keys (#8595)
- getWidget().multiSelectMode = MultiSelectMode.SIMPLE;
- } else {
- getWidget().multiSelectMode = MultiSelectMode.valueOf(uidl
- .getStringAttribute("multiselectmode"));
- }
- } else {
- Roles.getTreeRole().setAriaMultiselectableProperty(
- getWidget().getElement(), false);
- }
-
- getWidget().selectedIds = uidl.getStringArrayVariableAsSet("selected");
-
- // Update lastSelection and focusedNode to point to *actual* nodes again
- // after the old ones have been cleared from the body. This fixes focus
- // and keyboard navigation issues as described in #7057 and other
- // tickets.
- if (getWidget().lastSelection != null) {
- getWidget().lastSelection = getWidget().getNodeByKey(
- getWidget().lastSelection.key);
- }
- if (getWidget().focusedNode != null) {
- getWidget().setFocusedNode(
- getWidget().getNodeByKey(getWidget().focusedNode.key));
- }
-
- if (getWidget().lastSelection == null
- && getWidget().focusedNode == null
- && !getWidget().selectedIds.isEmpty()) {
- getWidget().setFocusedNode(
- getWidget().getNodeByKey(
- getWidget().selectedIds.iterator().next()));
- getWidget().focusedNode.setFocused(false);
- }
-
- // IE8 needs a hack to measure the tree again after update
- Util.forceIE8Redraw(getWidget().getElement());
-
- getWidget().rendering = false;
-
- }
-
- @Override
- public void onStateChanged(StateChangeEvent stateChangeEvent) {
- super.onStateChanged(stateChangeEvent);
- // VTree does not implement Focusable
- getWidget().setTabIndex(getState().tabIndex);
- }
-
- @Override
- public VTree getWidget() {
- return (VTree) super.getWidget();
- }
-
- private void handleUpdate(UIDL uidl) {
- final TreeNode rootNode = getWidget().getNodeByKey(
- uidl.getStringAttribute("rootKey"));
- if (rootNode != null) {
- if (!rootNode.getState()) {
- // expanding node happened server side
- rootNode.setState(true, false);
- }
- String levelPropertyString = Roles.getTreeitemRole()
- .getAriaLevelProperty(rootNode.getElement());
- int levelProperty;
- try {
- levelProperty = Integer.valueOf(levelPropertyString);
- } catch (NumberFormatException e) {
- levelProperty = 1;
- VConsole.error(e);
- }
-
- renderChildNodes(rootNode, (Iterator) uidl.getChildIterator(),
- levelProperty + 1);
- }
- }
-
- /**
- * Registers action for the root and also for individual nodes
- *
- * @param uidl
- */
- private void updateActionMap(UIDL uidl) {
- final Iterator<?> it = uidl.getChildIterator();
- while (it.hasNext()) {
- final UIDL action = (UIDL) it.next();
- final String key = action.getStringAttribute("key");
- final String caption = action
- .getStringAttribute(TreeConstants.ATTRIBUTE_ACTION_CAPTION);
- String iconUrl = null;
- if (action.hasAttribute(TreeConstants.ATTRIBUTE_ACTION_ICON)) {
- iconUrl = getConnection()
- .translateVaadinUri(
- action.getStringAttribute(TreeConstants.ATTRIBUTE_ACTION_ICON));
- }
- getWidget().registerAction(key, caption, iconUrl);
- }
-
- }
-
- public void updateNodeFromUIDL(TreeNode treeNode, UIDL uidl, int level) {
- Roles.getTreeitemRole().setAriaLevelProperty(treeNode.getElement(),
- level);
-
- String nodeKey = uidl.getStringAttribute("key");
- treeNode.setText(uidl
- .getStringAttribute(TreeConstants.ATTRIBUTE_NODE_CAPTION));
- treeNode.key = nodeKey;
-
- getWidget().registerNode(treeNode);
-
- if (uidl.hasAttribute("al")) {
- treeNode.actionKeys = uidl.getStringArrayAttribute("al");
- }
-
- if (uidl.getTag().equals("node")) {
- if (uidl.getChildCount() == 0) {
- treeNode.childNodeContainer.setVisible(false);
- } else {
- renderChildNodes(treeNode, (Iterator) uidl.getChildIterator(),
- level + 1);
- treeNode.childrenLoaded = true;
- }
- } else {
- treeNode.addStyleName(TreeNode.CLASSNAME + "-leaf");
- }
- if (uidl.hasAttribute(TreeConstants.ATTRIBUTE_NODE_STYLE)) {
- treeNode.setNodeStyleName(uidl
- .getStringAttribute(TreeConstants.ATTRIBUTE_NODE_STYLE));
- }
-
- String description = uidl.getStringAttribute("descr");
- if (description != null) {
- tooltipMap.put(treeNode, new TooltipInfo(description));
- }
-
- if (uidl.getBooleanAttribute("expanded") && !treeNode.getState()) {
- treeNode.setState(true, false);
- }
-
- if (uidl.getBooleanAttribute("selected")) {
- treeNode.setSelected(true);
- // ensure that identifier is in selectedIds array (this may be a
- // partial update)
- getWidget().selectedIds.add(nodeKey);
- }
-
- String iconUrl = uidl
- .getStringAttribute(TreeConstants.ATTRIBUTE_NODE_ICON);
- String iconAltText = uidl
- .getStringAttribute(TreeConstants.ATTRIBUTE_NODE_ICON_ALT);
- treeNode.setIcon(iconUrl, iconAltText);
- }
-
- void renderChildNodes(TreeNode containerNode, Iterator<UIDL> i, int level) {
- containerNode.childNodeContainer.clear();
- containerNode.childNodeContainer.setVisible(true);
- while (i.hasNext()) {
- final UIDL childUidl = i.next();
- // actions are in bit weird place, don't mix them with children,
- // but current node's actions
- if ("actions".equals(childUidl.getTag())) {
- updateActionMap(childUidl);
- continue;
- }
- final TreeNode childTree = getWidget().new TreeNode();
- getConnection().getVTooltip().connectHandlersToWidget(childTree);
- updateNodeFromUIDL(childTree, childUidl, level);
- containerNode.childNodeContainer.add(childTree);
- if (!i.hasNext()) {
- childTree
- .addStyleDependentName(childTree.isLeaf() ? "leaf-last"
- : "last");
- childTree.childNodeContainer.addStyleDependentName("last");
- }
- }
- containerNode.childrenLoaded = true;
- }
-
- @Override
- public boolean isReadOnly() {
- return super.isReadOnly() || getState().propertyReadOnly;
- }
-
- @Override
- public TreeState getState() {
- return (TreeState) super.getState();
- }
-
- @Override
- public TooltipInfo getTooltipInfo(Element element) {
-
- TooltipInfo info = null;
-
- // Try to find a tooltip for a node
- if (element != getWidget().getElement()) {
- Object node = Util.findWidget(
- (com.google.gwt.user.client.Element) element,
- TreeNode.class);
-
- if (node != null) {
- TreeNode tnode = (TreeNode) node;
- if (tnode.isCaptionElement(element)) {
- info = tooltipMap.get(tnode);
- }
- }
- }
-
- // If no tooltip found for the node or if the target was not a node, use
- // the default tooltip
- if (info == null) {
- info = super.getTooltipInfo(element);
- }
-
- return info;
- }
-
- @Override
- public boolean hasTooltip() {
- /*
- * Item tooltips are not processed until updateFromUIDL, so we can't be
- * sure that there are no tooltips during onStateChange when this method
- * is used.
- */
- return true;
- }
-
- }
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