| /* |
| * Copyright 2002-2005 Sascha Weinreuter |
| * |
| * 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 org.intellij.plugins.xpathView; |
| |
| import com.intellij.openapi.actionSystem.*; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.fileEditor.FileEditorManager; |
| import com.intellij.openapi.fileTypes.StdFileTypes; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.xml.XmlFile; |
| |
| public abstract class XPathAction extends AnAction { |
| protected final XPathAppComponent myComponent; |
| |
| protected XPathAction() { |
| myComponent = XPathAppComponent.getInstance(); |
| } |
| |
| public void update(AnActionEvent event) { |
| super.update(event); |
| final Presentation presentation = event.getPresentation(); |
| |
| // keep track of enabled status |
| presentation.setEnabled(isEnabled(event, true)); |
| |
| // provide icon for toolbar |
| if (ActionPlaces.MAIN_TOOLBAR.equals(event.getPlace())) { |
| updateToolbar(event); |
| } else if (ActionPlaces.isMainMenuOrActionSearch(event.getPlace())) { |
| updateMainMenu(event); |
| } |
| else if (ActionPlaces.EDITOR_POPUP.equals(event.getPlace())) { |
| presentation.setVisible(presentation.isEnabled()); |
| } |
| } |
| |
| protected void updateMainMenu(AnActionEvent event) { |
| final boolean b = myComponent.getConfig().SHOW_IN_MAIN_MENU; |
| event.getPresentation().setVisible(b && isEnabled(event, false)); |
| } |
| |
| protected void updateToolbar(AnActionEvent event) { |
| event.getPresentation().setVisible(myComponent.getConfig().SHOW_IN_TOOLBAR); |
| } |
| |
| protected boolean isEnabled(AnActionEvent event, boolean checkAvailable) { |
| final Project project = CommonDataKeys.PROJECT.getData(event.getDataContext()); |
| if (project == null) { |
| // no active project |
| return false; |
| } |
| |
| Editor editor = CommonDataKeys.EDITOR.getData(event.getDataContext()); |
| if (editor == null) { |
| FileEditorManager fem = FileEditorManager.getInstance(project); |
| editor = fem.getSelectedTextEditor(); |
| } |
| if (editor == null) { |
| return false; |
| } |
| |
| // do we have an xml file? |
| final PsiDocumentManager cem = PsiDocumentManager.getInstance(project); |
| final PsiFile psiFile = cem.getPsiFile(editor.getDocument()); |
| // this is also true for DTD documents... |
| if (!(psiFile instanceof XmlFile)) { |
| return false; |
| } else if (psiFile.getLanguage() == StdFileTypes.DTD.getLanguage()) { |
| return false; |
| } |
| |
| return !checkAvailable || isEnabledAt((XmlFile)psiFile, editor.getCaretModel().getOffset()); |
| } |
| |
| protected abstract boolean isEnabledAt(XmlFile xmlFile, int offset); |
| } |