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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation.
* 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:
* IBM Corporation - Jeff Briggs, Henry Hughes, Ryan Morse
*******************************************************************************/
package org.eclipse.linuxtools.internal.systemtap.ui.ide;
import java.text.MessageFormat;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.window.Window;
import org.eclipse.linuxtools.internal.systemtap.ui.ide.editors.stp.STPEditor;
import org.eclipse.linuxtools.systemtap.ui.editor.actions.file.NewFileAction;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.ListDialog;
/**
* A simple class that contains information about the current session of the IDE, such as
* the path to the tapset libraries, and the active SystemTap Script Editor.
* @author Ryan Morse
*/
public class IDESessionSettings {
public static String tapsetLocation = ""; //$NON-NLS-1$
/**
* Use {@link IDESessionSettings#setActiveSTPEditor(STPEditor)} and
* {@link IDESessionSettings#getActiveSTPEditor()}
*/
private static STPEditor activeSTPEditor = null;
/**
* Returns the most recent active {@link STPEditor} script editor if one was
* set. If one was not set and there is only one {@link STPEditor} script editor
* open then that one is returned. Otherwise returns null.
* @return The most recent active {@link STPEditor}
* @since 1.2
*/
public static STPEditor getActiveSTPEditor() {
if (activeSTPEditor == null) {
// If no active editor is et and there is only one
// opened stap script editor, set it to be the active editor.
IEditorReference[] editors = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getEditorReferences();
STPEditor stpEditor = null;
for (IEditorReference editor: editors) {
if (editor.getId().equals(STPEditor.ID)) {
if (stpEditor == null) {
stpEditor = (STPEditor) editor.getEditor(true);
} else {
return null;
}
}
}
activeSTPEditor = stpEditor;
}
return activeSTPEditor;
}
/**
* Sets the current active editor.
* @param editor the active editor.
* @since 1.2
*/
public static void setActiveSTPEditor(STPEditor editor) {
activeSTPEditor = editor;
}
/**
* Restore and return an STPEditor based on the user's choice.
* @param checkCurrent Set to <code>true</code> if the currently active editor may be returned
* if it is an {@link STPEditor}.
* @return
*/
public static STPEditor getOrAskForActiveSTPEditor(boolean checkCurrent) {
STPEditor stpEditor;
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
IWorkbenchPage page = window.getActivePage();
if (checkCurrent) {
IEditorPart editor = page.getActiveEditor();
stpEditor = editor instanceof STPEditor ? (STPEditor) editor : askForSTPEditor(window);
} else {
stpEditor = askForSTPEditor(window);
}
if (stpEditor != null) {
page.activate(stpEditor);
}
return stpEditor;
}
private static STPEditor askForSTPEditor(IWorkbenchWindow window) {
final List<STPEditor> allEditors = new LinkedList<>();
for (IEditorReference editor : window.getActivePage().getEditorReferences()) {
if (editor.getId().equals(STPEditor.ID)) {
allEditors.add((STPEditor) editor.getEditor(true));
}
}
switch (allEditors.size()) {
// If only one file is found, open it. Give user the option to open another file.
case 1:
MessageDialog messageDialog = new MessageDialog(window.getShell(),
Localization.getString("GetEditorAction.DialogTitle"), null, //$NON-NLS-1$
MessageFormat.format(Localization.getString("GetEditorAction.AskBeforeOpenMessage"), //$NON-NLS-1$
allEditors.get(0).getEditorInput().getName() ),
MessageDialog.QUESTION,
new String[]{Localization.getString("GetEditorAction.AskBeforeOpenCancel"), //$NON-NLS-1$
Localization.getString("GetEditorAction.AskBeforeOpenAnother"), //$NON-NLS-1$
Localization.getString("GetEditorAction.AskBeforeOpenYes")}, 2); //$NON-NLS-1$
switch (messageDialog.open()) {
case 2:
return allEditors.get(0);
case 1:
return openNewFile(window);
default:
return null;
}
// If no files found, prompt user to open a new file
case 0:
return openNewFile(window);
// If multiple files found, prompt user to select one of them
default:
return openNewFileFromMultiple(window, allEditors);
}
}
private static STPEditor openNewFileFromMultiple(IWorkbenchWindow window, final List<STPEditor> allEditors) {
ListDialog listDialog = new ListDialog(window.getShell());
listDialog.setTitle(Localization.getString("GetEditorAction.DialogTitle")); //$NON-NLS-1$
listDialog.setContentProvider(new ArrayContentProvider());
listDialog.setLabelProvider(new LabelProvider() {
@Override
public String getText(Object element) {
int i = (Integer) element;
return i != -1 ? allEditors.get(i).getEditorInput().getName()
: Localization.getString("GetEditorAction.OtherFile"); //$NON-NLS-1$
}
});
Integer[] editorIndexes = new Integer[allEditors.size() + 1];
for (int i = 0; i < editorIndexes.length - 1; i++) {
editorIndexes[i] = i;
}
editorIndexes[editorIndexes.length - 1] = -1;
listDialog.setInput(editorIndexes);
listDialog.setMessage(Localization.getString("GetEditorAction.SelectEditor")); //$NON-NLS-1$
if (listDialog.open() == Window.OK) {
int result = (Integer) listDialog.getResult()[0];
return result != -1 ? allEditors.get(result) : openNewFile(window);
}
// Abort if user cancels
return null;
}
private static STPEditor openNewFile(IWorkbenchWindow window) {
NewFileAction action = new NewFileAction();
action.run();
if (action.isSuccessful()) {
return (STPEditor) window.getActivePage().getActiveEditor();
}
return null;
}
}
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