/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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.android.ide.eclipse.editors.layout;
import com.android.ide.eclipse.adt.AdtPlugin;
import com.android.ide.eclipse.adt.sdk.AndroidTargetData;
import com.android.ide.eclipse.adt.ui.EclipseUiHelper;
import com.android.ide.eclipse.common.AndroidConstants;
import com.android.ide.eclipse.editors.AndroidEditor;
import com.android.ide.eclipse.editors.descriptors.DocumentDescriptor;
import com.android.ide.eclipse.editors.resources.manager.ResourceFolder;
import com.android.ide.eclipse.editors.resources.manager.ResourceManager;
import com.android.ide.eclipse.editors.ui.tree.UiActions;
import com.android.ide.eclipse.editors.uimodel.UiDocumentNode;
import com.android.ide.eclipse.editors.uimodel.UiElementNode;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.gef.ui.parts.TreeViewer;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IShowEditorInput;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
import org.eclipse.ui.views.properties.IPropertySheetPage;
import org.w3c.dom.Document;
/**
* Multi-page form editor for /res/layout XML files.
*/
public class LayoutEditor extends AndroidEditor implements IShowEditorInput, IPartListener {
public static final String ID = AndroidConstants.EDITORS_NAMESPACE + ".layout.LayoutEditor"; //$NON-NLS-1$
/** Root node of the UI element hierarchy */
private UiDocumentNode mUiRootNode;
private AbstractGraphicalLayoutEditor mGraphicalEditor;
private int mGraphicalEditorIndex;
/** Implementation of the {@link IContentOutlinePage} for this editor */
private UiContentOutlinePage mOutline;
/** Custom implementation of {@link IPropertySheetPage} for this editor */
private UiPropertySheetPage mPropertyPage;
private UiEditorActions mUiEditorActions;
/**
* Creates the form editor for resources XML files.
*/
public LayoutEditor() {
super();
}
/**
* @return The root node of the UI element hierarchy
*/
@Override
public UiDocumentNode getUiRootNode() {
return mUiRootNode;
}
// ---- Base Class Overrides ----
@Override
public void dispose() {
getSite().getPage().removePartListener(this);
super.dispose();
}
/**
* Save the XML.
* <p/>
* The actual save operation is done in the super class by committing
* all data to the XML model and then having the Structured XML Editor
* save the XML.
* <p/>
* Here we just need to tell the graphical editor that the model has
* been saved.
*/
@Override
public void doSave(IProgressMonitor monitor) {
super.doSave(monitor);
if (mGraphicalEditor != null) {
mGraphicalEditor.doSave(monitor);
}
}
/**
* Returns whether the "save as" operation is supported by this editor.
* <p/>
* Save-As is a valid operation for the ManifestEditor since it acts on a
* single source file.
*
* @see IEditorPart
*/
@Override
public boolean isSaveAsAllowed() {
return true;
}
/**
* Create the various form pages.
*/
@Override
protected void createFormPages() {
try {
// The graphical layout editor is now enabled by default.
// In case there's an issue we provide a way to disable it using an
// env variable.
if (System.getenv("ANDROID_DISABLE_LAYOUT") == null) {
if (mGraphicalEditor == null) {
mGraphicalEditor = new GraphicalLayoutEditor(this);
mGraphicalEditorIndex = addPage(mGraphicalEditor, getEditorInput());
setPageText(mGraphicalEditorIndex, mGraphicalEditor.getTitle());
} else {
mGraphicalEditor.reloadEditor();
}
// update the config based on the opened file.
IEditorInput input = getEditorInput();
if (input instanceof FileEditorInput) {
FileEditorInput fileInput = (FileEditorInput)input;
ResourceFolder resFolder = ResourceManager.getInstance().getResourceFolder(
fileInput.getFile());
if (resFolder != null) {
mGraphicalEditor.editNewFile(resFolder.getConfiguration());
}
}
// put in place the listener to handle layout recompute only when needed.
getSite().getPage().addPartListener(this);
}
} catch (PartInitException e) {
AdtPlugin.log(e, "Error creating nested page"); //$NON-NLS-1$
}
}
/* (non-java doc)
* Change the tab/title name to include the name of the layout.
*/
@Override
protected void setInput(IEditorInput input) {
super.setInput(input);
handleNewInput(input);
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.part.EditorPart#setInputWithNotify(org.eclipse.ui.IEditorInput)
*/
@Override
protected void setInputWithNotify(IEditorInput input) {
super.setInputWithNotify(input);
handleNewInput(input);
}
/**
* Called to replace the current {@link IEditorInput} with another one.
* <p/>This is used when {@link MatchingStrategy} returned <code>true</code> which means we're
* opening a different configuration of the same layout.
*/
public void showEditorInput(IEditorInput editorInput) {
// save the current editor input.
doSave(new NullProgressMonitor());
// get the current page
int currentPage = getActivePage();
// remove the pages, except for the graphical editor, which will be dynamically adapted
// to the new model.
// page after the graphical editor:
int count = getPageCount();
for (int i = count - 1 ; i > mGraphicalEditorIndex ; i--) {
removePage(i);
}
// pages before the graphical editor
for (int i = mGraphicalEditorIndex - 1 ; i >= 0 ; i--) {
removePage(i);
}
// set the current input.
setInputWithNotify(editorInput);
// re-create or reload the pages with the default page shown as the previous active page.
createAndroidPages();
selectDefaultPage(Integer.toString(currentPage));
// update the outline
if (mOutline != null && mGraphicalEditor != null) {
mOutline.reloadModel();
}
}
/**
* Processes the new XML Model, which XML root node is given.
*
* @param xml_doc The XML document, if available, or null if none exists.
*/
@Override
protected void xmlModelChanged(Document xml_doc) {
// init the ui root on demand
initUiRootNode(false /*force*/);
mUiRootNode.loadFromXmlNode(xml_doc);
// update the model first, since it is used by the viewers.
super.xmlModelChanged(xml_doc);
if (mGraphicalEditor != null) {
mGraphicalEditor.onXmlModelChanged();
}
if (mOutline != null) {
mOutline.reloadModel();
}
}
/* (non-java doc)
* Returns the IContentOutlinePage when asked for it.
*/
@SuppressWarnings("unchecked")
@Override
public Object getAdapter(Class adapter) {
// for the outline, force it to come from the Graphical Editor.
// This fixes the case where a layout file is opened in XML view first and the outline
// gets stuck in the XML outline.
if (IContentOutlinePage.class == adapter && mGraphicalEditor != null) {
if (mOutline == null) {
mOutline = new UiContentOutlinePage(mGraphicalEditor, new TreeViewer());
}
return mOutline;
}
if (IPropertySheetPage.class == adapter && mGraphicalEditor != null) {
if (mPropertyPage == null) {
mPropertyPage = new UiPropertySheetPage();
}
return mPropertyPage;
}
// return default
return super.getAdapter(adapter);
}
@Override
protected void pageChange(int newPageIndex) {
super.pageChange(newPageIndex);
if (mGraphicalEditor != null) {
if (newPageIndex == mGraphicalEditorIndex) {
mGraphicalEditor.activated();
} else {
mGraphicalEditor.deactivated();
}
}
}
// ----- IPartListener Methods ----
public void partActivated(IWorkbenchPart part) {
if (part == this) {
if (mGraphicalEditor != null) {
if (getActivePage() == mGraphicalEditorIndex) {
mGraphicalEditor.activated();
} else {
mGraphicalEditor.deactivated();
}
}
}
}
public void partBroughtToTop(IWorkbenchPart part) {
partActivated(part);
}
public void partClosed(IWorkbenchPart part) {
// pass
}
public void partDeactivated(IWorkbenchPart part) {
if (part == this) {
if (mGraphicalEditor != null && getActivePage() == mGraphicalEditorIndex) {
mGraphicalEditor.deactivated();
}
}
}
public void partOpened(IWorkbenchPart part) {
EclipseUiHelper.showView(EclipseUiHelper.CONTENT_OUTLINE_VIEW_ID, false /* activate */);
EclipseUiHelper.showView(EclipseUiHelper.PROPERTY_SHEET_VIEW_ID, false /* activate */);
}
public class UiEditorActions extends UiActions {
@Override
protected UiDocumentNode getRootNode() {
return mUiRootNode;
}
// Select the new item
@Override
protected void selectUiNode(UiElementNode uiNodeToSelect) {
mGraphicalEditor.selectModel(uiNodeToSelect);
}
@Override
public void commitPendingXmlChanges() {
// Pass. There is nothing to commit before the XML is changed here.
}
}
public UiEditorActions getUiEditorActions() {
if (mUiEditorActions == null) {
mUiEditorActions = new UiEditorActions();
}
return mUiEditorActions;
}
// ---- Local Methods ----
/**
* Returns true if the Graphics editor page is visible. This <b>must</b> be
* called from the UI thread.
*/
boolean isGraphicalEditorActive() {
IWorkbenchPartSite workbenchSite = getSite();
IWorkbenchPage workbenchPage = workbenchSite.getPage();
// check if the editor is visible in the workbench page
if (workbenchPage.isPartVisible(this) && workbenchPage.getActiveEditor() == this) {
// and then if the page of the editor is visible (not to be confused with
// the workbench page)
return mGraphicalEditorIndex == getActivePage();
}
return false;
}
@Override
protected void initUiRootNode(boolean force) {
// The root UI node is always created, even if there's no corresponding XML node.
if (mUiRootNode == null || force) {
// get the target data from the opened file (and its project)
AndroidTargetData data = getTargetData();
Document doc = null;
if (mUiRootNode != null) {
doc = mUiRootNode.getXmlDocument();
}
DocumentDescriptor desc;
if (data == null) {
desc = new DocumentDescriptor("temp", null /*children*/);
} else {
desc = data.getLayoutDescriptors().getDescriptor();
}
// get the descriptors from the data.
mUiRootNode = (UiDocumentNode) desc.createUiNode();
mUiRootNode.setEditor(this);
onDescriptorsChanged(doc);
}
}
private void onDescriptorsChanged(Document document) {
if (document != null) {
mUiRootNode.loadFromXmlNode(document);
} else {
mUiRootNode.reloadFromXmlNode(mUiRootNode.getXmlDocument());
}
if (mOutline != null) {
mOutline.reloadModel();
}
if (mGraphicalEditor != null) {
mGraphicalEditor.reloadEditor();
mGraphicalEditor.reloadPalette();
mGraphicalEditor.recomputeLayout();
}
}
/**
* Handles a new input, and update the part name.
* @param input the new input.
*/
private void handleNewInput(IEditorInput input) {
if (input instanceof FileEditorInput) {
FileEditorInput fileInput = (FileEditorInput) input;
IFile file = fileInput.getFile();
setPartName(String.format("%1$s",
file.getName()));
}
}
}
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