/*
* Copyright (c) 2014 Patrick Scheibe
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package de.halirutan.mathematica.actions;
import com.intellij.codeInsight.highlighting.HighlightManager;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.colors.EditorColors;
import com.intellij.openapi.editor.colors.EditorColorsManager;
import com.intellij.openapi.editor.colors.EditorColorsScheme;
import com.intellij.openapi.editor.markup.TextAttributes;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.wm.StatusBar;
import com.intellij.openapi.wm.WindowManager;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiReference;
import com.intellij.psi.util.PsiTreeUtil;
import de.halirutan.mathematica.parsing.psi.api.Symbol;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* @author patrick (7/7/14)
*/
@SuppressWarnings("ComponentNotRegistered")
public class HighlightElementAndReferences extends AnAction {
public void actionPerformed(AnActionEvent e) {
final Project project = e.getProject();
final FileEditorManager editorManager =
FileEditorManager.getInstance(project);
final HighlightManager highlightManager =
HighlightManager.getInstance(project);
final EditorColorsManager editorColorsManager =
EditorColorsManager.getInstance();
final Editor editor = editorManager.getSelectedTextEditor();
final EditorColorsScheme globalScheme =
editorColorsManager.getGlobalScheme();
final TextAttributes textattributes =
globalScheme.getAttributes(
EditorColors.SEARCH_RESULT_ATTRIBUTES);
assert editor != null;
assert project != null;
final PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
assert psiFile != null;
//region Interesting part where I track down usages
PsiElement element = psiFile.findElementAt(editor.getCaretModel().getOffset());
element = (element != null) ? element.getParent() : null;
final List<PsiElement> usages = new ArrayList<PsiElement>();
if (element instanceof Symbol) {
// usages.add(element);
final PsiReference ref = element.getReference();
if (ref != null) {
final PsiElement resolve = ref.resolve();
if (resolve != null && resolve instanceof Symbol) {
if (!resolve.equals(element))
usages.add(resolve);
final Collection<Symbol> symbolsInFile = PsiTreeUtil.findChildrenOfType(psiFile, Symbol.class);
for (Symbol symbol : symbolsInFile) {
final PsiReference reference = symbol.getReference();
if (reference != null) {
final PsiElement resolve1 = reference.resolve();
if (resolve1 != null && !symbol.equals(resolve1) && resolve.equals(resolve1)) {
usages.add(symbol);
}
}
}
}
}
}
//endregion
highlightManager.addOccurrenceHighlights(
editor, usages.toArray(new PsiElement[usages.size()]), textattributes, false, null);
final WindowManager windowManager = WindowManager.getInstance();
final StatusBar statusBar = windowManager.getStatusBar(project);
assert statusBar != null;
statusBar.setInfo("Press Esc to remove highlighting");
}
}