Java tutorial
/* * Copyright 2010 Ronnie Kolehmainen * * 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.github.cssxfire; import com.github.cssxfire.filter.ReduceStrategyManager; import com.github.cssxfire.tree.CssDeclarationPath; import com.github.cssxfire.ui.CssToolWindow; import com.intellij.icons.AllIcons; import com.intellij.ide.plugins.IdeaPluginDescriptor; import com.intellij.ide.plugins.PluginManager; import com.intellij.ide.util.PropertiesComponent; import com.intellij.openapi.actionSystem.AnAction; import com.intellij.openapi.actionSystem.AnActionEvent; import com.intellij.openapi.application.ApplicationManager; import com.intellij.openapi.components.ProjectComponent; import com.intellij.openapi.extensions.PluginId; import com.intellij.openapi.project.DumbService; import com.intellij.openapi.project.Project; import com.intellij.openapi.ui.Messages; import com.intellij.openapi.util.Disposer; import com.intellij.openapi.wm.ToolWindow; import com.intellij.openapi.wm.ToolWindowAnchor; import com.intellij.openapi.wm.ToolWindowManager; import com.intellij.psi.PsiManager; import com.intellij.psi.PsiTreeChangeAdapter; import com.intellij.psi.PsiTreeChangeEvent; import com.intellij.psi.PsiTreeChangeListener; import com.intellij.psi.css.CssDeclaration; import com.intellij.ui.content.Content; import com.intellij.ui.content.ContentFactory; import org.jetbrains.annotations.NotNull; import java.util.Collection; public class IncomingChangesComponent implements ProjectComponent { public static final String TOOLWINDOW_ID = "CSS-X-Fire"; private static final String PREVIOUS_VERSION_PROPERTY_NAME = "css.x.fire.previous.version"; private final Project project; private final CssToolWindow cssToolWindow; private final PsiTreeChangeListener myListener = new PsiTreeChangeAdapter() { @Override public void childReplaced(@NotNull PsiTreeChangeEvent event) { IncomingChangesComponent.this.onPsiChange(event); } @Override public void childRemoved(@NotNull PsiTreeChangeEvent event) { IncomingChangesComponent.this.onPsiChange(event); } }; private void onPsiChange(PsiTreeChangeEvent event) { if (event.getOldChild() instanceof CssDeclaration || event.getParent() instanceof CssDeclaration) { cssToolWindow.refreshLeafs(); } } public IncomingChangesComponent(Project project) { this.project = project; this.cssToolWindow = new CssToolWindow(project); } /** * Helper * * @param project the project * @return the IncomingChangesComponent instance */ public static IncomingChangesComponent getInstance(Project project) { return project.getComponent(IncomingChangesComponent.class); } public void initComponent() { if (!CssXFireConnector.getInstance().isInitialized()) { return; } IdeaPluginDescriptor pluginDescriptor = PluginManager.getPlugin(PluginId.getId("CSS-X-Fire")); if (pluginDescriptor == null) { return; } String currentVersion = pluginDescriptor.getVersion(); String previousVersion = PropertiesComponent.getInstance().getValue(PREVIOUS_VERSION_PROPERTY_NAME); if (!currentVersion.equals(previousVersion)) { PropertiesComponent.getInstance().setValue(PREVIOUS_VERSION_PROPERTY_NAME, currentVersion); final String message = previousVersion == null ? "CSS-X-Fire has been installed.\n\nPress Yes to install the browser plugin." : "CSS-X-Fire has been upgraded from " + previousVersion + " to " + currentVersion + ".\n\nPress Yes to update the browser plugin."; ApplicationManager.getApplication().invokeLater(new Runnable() { public void run() { int res = Messages.showYesNoDialog(project, message, "CSS-X-Fire", null); if (res == 0) { new AnAction("Help", "Show the CSS-X-Fire help page", AllIcons.Actions.Help) { @Override public void actionPerformed(AnActionEvent anActionEvent) { CssUtils.openInFirefox("http://localhost:6776/files/about.html"); } }.actionPerformed(null); } } }); } } public void disposeComponent() { projectClosed(); } @NotNull public String getComponentName() { return "IncomingChangesComponent"; } public void projectOpened() { if (!CssXFireConnector.getInstance().isInitialized()) { return; } final ToolWindow toolWindow = ToolWindowManager.getInstance(project).registerToolWindow(TOOLWINDOW_ID, true, ToolWindowAnchor.BOTTOM); final ContentFactory contentFactory = toolWindow.getContentManager().getFactory(); final Content content = contentFactory.createContent(cssToolWindow, "Incoming changes", true); Disposer.register(content, cssToolWindow); Disposer.register(project, content); content.setCloseable(false); toolWindow.getContentManager().addContent(content); toolWindow.setAutoHide(false); toolWindow.setAvailable(true, null); CssXFireConnector.getInstance().addProjectComponent(this); PsiManager.getInstance(project).addPsiTreeChangeListener(myListener); } public void projectClosed() { if (!CssXFireConnector.getInstance().isInitialized()) { return; } PsiManager.getInstance(project).removePsiTreeChangeListener(myListener); cssToolWindow.clearTree(); CssXFireConnector.getInstance().removeProjectComponent(this); ToolWindowManager.getInstance(project).unregisterToolWindow(TOOLWINDOW_ID); } public void processRule(final FirebugChangesBean changesBean) { DumbService.getInstance(project).smartInvokeLater(new Runnable() { public void run() { if (!project.isInitialized()) { return; } // Apply routes FirebugChangesBean routedChangesBean = changesBean.applyRoutes(project); // Get all possible candidates from the style info provided by Firebug final Collection<CssDeclarationPath> candidates = IncomingChangesProcessor .getProjectCandidates(project, routedChangesBean); // Reduce results if any of the filter options are checked ReduceStrategyManager.getStrategy(project, routedChangesBean).reduce(candidates); // Render remaining candidates in the "Incoming changes" tree view for (CssDeclarationPath candidate : candidates) { cssToolWindow.getTreeModel().intersect(candidate); } if (CssXFireSettings.getInstance(project).isAutoExpand()) { cssToolWindow.expandAll(); } } }); } public void handleEvent(final FirebugEvent event) { DumbService.getInstance(project).smartInvokeLater(new Runnable() { public void run() { if (!project.isInitialized()) { return; } if ("refresh".equals(event.getName()) && CssXFireSettings.getInstance(project).isAutoClear()) { cssToolWindow.clearTree(); } } }); } }