Java tutorial
/* * Copyright 2000-2014 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.debug.internal; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import com.google.gwt.core.client.JsArray; import com.google.gwt.dom.client.Style.TextDecoration; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.MouseOutEvent; import com.google.gwt.event.dom.client.MouseOutHandler; import com.google.gwt.event.dom.client.MouseOverEvent; import com.google.gwt.event.dom.client.MouseOverHandler; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import com.vaadin.client.ApplicationConfiguration; import com.vaadin.client.ApplicationConnection; import com.vaadin.client.ComponentConnector; import com.vaadin.client.ComputedStyle; import com.vaadin.client.ConnectorMap; import com.vaadin.client.ServerConnector; import com.vaadin.client.SimpleTree; import com.vaadin.client.ValueMap; /** * Analyze layouts view panel of the debug window. * * @since 7.1.4 */ public class AnalyzeLayoutsPanel extends FlowPanel { private List<SelectConnectorListener> listeners = new ArrayList<SelectConnectorListener>(); public void update() { clear(); add(new Label("Analyzing layouts...")); List<ApplicationConnection> runningApplications = ApplicationConfiguration.getRunningApplications(); for (ApplicationConnection applicationConnection : runningApplications) { applicationConnection.analyzeLayouts(); } } public void meta(ApplicationConnection ac, ValueMap meta) { clear(); JsArray<ValueMap> valueMapArray = meta.getJSValueMapArray("invalidLayouts"); int size = valueMapArray.length(); if (size > 0) { SimpleTree root = new SimpleTree("Layouts analyzed, " + size + " top level problems"); for (int i = 0; i < size; i++) { printLayoutError(ac, valueMapArray.get(i), root); } root.open(false); add(root); } else { add(new Label("Layouts analyzed, no top level problems")); } Set<ComponentConnector> zeroHeightComponents = new HashSet<ComponentConnector>(); Set<ComponentConnector> zeroWidthComponents = new HashSet<ComponentConnector>(); findZeroSizeComponents(zeroHeightComponents, zeroWidthComponents, ac.getUIConnector()); if (zeroHeightComponents.size() > 0 || zeroWidthComponents.size() > 0) { add(new HTML( "<h4> Client side notifications</h4>" + " <em>The following relative sized components were " + "rendered to a zero size container on the client side." + " Note that these are not necessarily invalid " + "states, but reported here as they might be.</em>")); if (zeroHeightComponents.size() > 0) { add(new HTML("<p><strong>Vertically zero size:</strong></p>")); printClientSideDetectedIssues(zeroHeightComponents, ac); } if (zeroWidthComponents.size() > 0) { add(new HTML("<p><strong>Horizontally zero size:</strong></p>")); printClientSideDetectedIssues(zeroWidthComponents, ac); } } } private void printClientSideDetectedIssues(Set<ComponentConnector> zeroSized, ApplicationConnection ac) { // keep track of already highlighted parents HashSet<String> parents = new HashSet<String>(); for (final ComponentConnector connector : zeroSized) { final ServerConnector parent = connector.getParent(); final String parentId = parent.getConnectorId(); final Label errorDetails = new Label(connector.getClass().getSimpleName() + "[" + connector.getConnectorId() + "]" + " inside " + parent.getClass().getSimpleName()); if (parent instanceof ComponentConnector) { final ComponentConnector parentConnector = (ComponentConnector) parent; if (!parents.contains(parentId)) { parents.add(parentId); Highlight.show(parentConnector, "yellow"); } errorDetails.addMouseOverHandler(new MouseOverHandler() { @Override public void onMouseOver(MouseOverEvent event) { Highlight.hideAll(); Highlight.show(parentConnector, "yellow"); Highlight.show(connector); errorDetails.getElement().getStyle().setTextDecoration(TextDecoration.UNDERLINE); } }); errorDetails.addMouseOutHandler(new MouseOutHandler() { @Override public void onMouseOut(MouseOutEvent event) { Highlight.hideAll(); errorDetails.getElement().getStyle().setTextDecoration(TextDecoration.NONE); } }); errorDetails.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { fireSelectEvent(connector); } }); } Highlight.show(connector); add(errorDetails); } } private void printLayoutError(ApplicationConnection ac, ValueMap valueMap, SimpleTree root) { final String pid = valueMap.getString("id"); // find connector final ComponentConnector connector = (ComponentConnector) ConnectorMap.get(ac).getConnector(pid); if (connector == null) { root.add(new SimpleTree("[" + pid + "] NOT FOUND")); return; } Highlight.show(connector); final SimpleTree errorNode = new SimpleTree(connector.getClass().getSimpleName() + " id: " + pid); errorNode.addDomHandler(new MouseOverHandler() { @Override public void onMouseOver(MouseOverEvent event) { Highlight.showOnly(connector); ((Widget) event.getSource()).getElement().getStyle().setTextDecoration(TextDecoration.UNDERLINE); } }, MouseOverEvent.getType()); errorNode.addDomHandler(new MouseOutHandler() { @Override public void onMouseOut(MouseOutEvent event) { Highlight.hideAll(); ((Widget) event.getSource()).getElement().getStyle().setTextDecoration(TextDecoration.NONE); } }, MouseOutEvent.getType()); errorNode.addDomHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { if (event.getNativeEvent().getEventTarget().cast() == errorNode.getElement().getChild(1).cast()) { fireSelectEvent(connector); } } }, ClickEvent.getType()); VerticalPanel errorDetails = new VerticalPanel(); if (valueMap.containsKey("heightMsg")) { errorDetails.add(new Label("Height problem: " + valueMap.getString("heightMsg"))); } if (valueMap.containsKey("widthMsg")) { errorDetails.add(new Label("Width problem: " + valueMap.getString("widthMsg"))); } if (errorDetails.getWidgetCount() > 0) { errorNode.add(errorDetails); } if (valueMap.containsKey("subErrors")) { HTML l = new HTML("<em>Expand this node to show problems that may be dependent on this problem.</em>"); errorDetails.add(l); JsArray<ValueMap> suberrors = valueMap.getJSValueMapArray("subErrors"); for (int i = 0; i < suberrors.length(); i++) { ValueMap value = suberrors.get(i); printLayoutError(ac, value, errorNode); } } root.add(errorNode); } private void findZeroSizeComponents(Set<ComponentConnector> zeroHeightComponents, Set<ComponentConnector> zeroWidthComponents, ComponentConnector connector) { Widget widget = connector.getWidget(); ComputedStyle computedStyle = new ComputedStyle(widget.getElement()); if (computedStyle.getIntProperty("height") == 0) { zeroHeightComponents.add(connector); } if (computedStyle.getIntProperty("width") == 0) { zeroWidthComponents.add(connector); } List<ServerConnector> children = connector.getChildren(); for (ServerConnector serverConnector : children) { if (serverConnector instanceof ComponentConnector) { findZeroSizeComponents(zeroHeightComponents, zeroWidthComponents, (ComponentConnector) serverConnector); } } } public void addListener(SelectConnectorListener listener) { listeners.add(listener); } public void removeListener(SelectConnectorListener listener) { listeners.remove(listener); } private void fireSelectEvent(ServerConnector connector) { for (SelectConnectorListener listener : listeners) { listener.select(connector, null); } } }