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/*******************************************************************************
* Copyright (c) 2014 BestSolution.at and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tom Schindl<tom.schindl@bestsolution.at> - initial API and implementation
*******************************************************************************/
package org.eclipse.fx.code.editor.fx;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.di.Focus;
import org.eclipse.e4.ui.di.Persist;
import org.eclipse.fx.code.editor.Constants;
import org.eclipse.fx.code.editor.Input;
import org.eclipse.fx.code.editor.SourceSelection;
import org.eclipse.fx.code.editor.services.URIProvider;
import org.eclipse.fx.core.di.ContextValue;
import org.eclipse.fx.core.event.EventBus;
import org.eclipse.fx.text.ui.source.SourceViewer;
import org.eclipse.fx.text.ui.source.SourceViewerConfiguration;
import org.eclipse.fx.ui.controls.styledtext.TextSelection;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentExtension3;
import org.eclipse.jface.text.IDocumentPartitioner;
import javafx.beans.property.Property;
import javafx.scene.layout.BorderPane;
/**
* Component setting up a JavaFX text editor
*/
@SuppressWarnings("restriction")
public class TextEditor {
private IDocument document;
private SourceViewerConfiguration configuration;
private IDocumentPartitioner partitioner;
private Input<?> input;
private Property<Input<?>> activeInput;
private SourceViewer viewer;
@Inject
public void setDocument(IDocument document) {
if( viewer != null ) {
throw new IllegalArgumentException("The document has to be set before the editor is initialized");
}
this.document = document;
}
@Inject
public void setSourceViewerConfiguration(SourceViewerConfiguration configuration) {
if( viewer != null ) {
throw new IllegalArgumentException("The configuration has to be set before the editor is initialized");
}
this.configuration = configuration;
}
@Inject
public void setPartitioner(IDocumentPartitioner partitioner) {
if( viewer != null ) {
throw new IllegalArgumentException("The partitioner has to be set before the editor is initialized");
}
this.partitioner = partitioner;
}
@Inject
public void setInput(Input<?> input) {
if( viewer != null ) {
throw new IllegalArgumentException("The input has to be set before the editor is initialized");
}
this.input = input;
}
@Inject
@Optional
public void setActiveInputTracker(@ContextValue("activeInput") Property<Input<?>> activeInput) {
this.activeInput = activeInput;
}
@PostConstruct
public void initUI(BorderPane pane, EventBus eventBus) {
viewer = createSourceViewer();
if( document instanceof IDocumentExtension3 ) {
((IDocumentExtension3)document).setDocumentPartitioner(configuration.getConfiguredDocumentPartitioning(viewer),partitioner);
} else {
document.setDocumentPartitioner(partitioner);
}
document.setDocumentPartitioner(partitioner);
partitioner.connect(document);
viewer.configure(configuration);
viewer.setDocument(document, configuration.getAnnotationModel());
pane.setCenter(viewer);
if( activeInput != null ) {
activeInput.setValue(input);
}
eventBus.subscribe(Constants.TOPIC_SELECT_SOURCE, EventBus.data(this::onSourceSelect));
}
private void onSourceSelect(SourceSelection data) {
if (((URIProvider)input).getURI().equals(data.uri)) {
getSourceViewer().getTextWidget().setSelection(new TextSelection(data.selection.getOffset(), data.selection.getLength()));
getSourceViewer().getTextWidget().revealCaret();
}
}
protected SourceViewer createSourceViewer() {
return new SourceViewer();
}
public SourceViewer getSourceViewer() {
return viewer;
}
@Persist
public void save() {
input.persist();
documentSaved();
}
protected void documentSaved() {
}
@Focus
void focused() {
if( activeInput != null ) {
activeInput.setValue(input);
}
viewer.getTextWidget().requestFocus();
//TODO We should remember the caret offset
if( viewer.getTextWidget().getCaretOffset() == -1 && viewer.getTextWidget().getContent().getCharCount() > 0 ) {
viewer.getTextWidget().setCaretOffset(0);
}
}
@PreDestroy
void destroy() {
if( activeInput != null && activeInput.getValue() == input ) {
activeInput.setValue(null);
}
this.input = null;
}
}
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