/*******************************************************************************
* Copyright (c) 2000, 2007 IBM Corporation 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.corext.buildpath;
import java.lang.reflect.InvocationTargetException;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.dltk.core.IBuildpathEntry;
import org.eclipse.dltk.core.IScriptProject;
import org.eclipse.dltk.core.IModelElement;
import org.eclipse.dltk.core.IProjectFragment;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.ui.scriptview.BuildPathContainer;
import org.eclipse.dltk.internal.ui.wizards.NewWizardMessages;
import org.eclipse.dltk.internal.ui.wizards.buildpath.newsourcepage.DialogPackageExplorerActionGroup;
/**
* Operation to remove source folders (of type <code>
* IProjectFragment</code> from the buildpath.
*
*/
public class RemoveFromBuildpathOperation extends BuildpathModifierOperation {
/**
* Constructor
*
* @param listener a <code>IBuildpathModifierListener</code> that is notified about
* changes on buildpath entries or <code>null</code> if no such notification is
* necessary.
* @param informationProvider a provider to offer information to the operation
*
* @see IBuildpathInformationProvider
* @see BuildpathModifier
*/
public RemoveFromBuildpathOperation(IBuildpathModifierListener listener, IBuildpathInformationProvider informationProvider) {
super(listener, informationProvider, NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_RemoveFromCP_tooltip, IBuildpathInformationProvider.REMOVE_FROM_BP);
}
/**
* Method which runs the actions with a progress monitor.<br>
*
* This operation does not require any queries from the provider.
*
* @param monitor a progress monitor, can be <code>null</code>
*/
public void run(IProgressMonitor monitor) throws InvocationTargetException {
List result= null;
fException= null;
try {
result= removeFromBuildpath(fInformationProvider.getRemoveLinkedFolderQuery(), getSelectedElements(), fInformationProvider.getScriptProject(), monitor);
} catch (CoreException e) {
fException= e;
result= null;
}
super.handleResult(result, monitor);
}
/**
* Find out whether this operation can be executed on
* the provided list of elements.
*
* @param elements a list of elements
* @param types an array of types for each element, that is,
* the type at position 'i' belongs to the selected element
* at position 'i'
*
* @return <code>true</code> if the operation can be
* executed on the provided list of elements, <code>
* false</code> otherwise.
* @throws ModelException
*/
public boolean isValid(List elements, int[] types) throws ModelException {
if (elements.size() == 0)
return false;
IScriptProject project= fInformationProvider.getScriptProject();
Iterator iterator= elements.iterator();
while (iterator.hasNext()) {
Object element= iterator.next();
if (!(element instanceof IProjectFragment || element instanceof IScriptProject || element instanceof BuildPathContainer))
return false;
if (element instanceof IScriptProject) {
if (!isSourceFolder(project))
return false;
} else if (element instanceof IProjectFragment) {
IBuildpathEntry entry= ((IProjectFragment) element).getRawBuildpathEntry();
if (entry != null && entry.getEntryKind() == IBuildpathEntry.BPE_CONTAINER) {
return false;
}
}
}
return true;
}
/**
* Get a description for this operation. The description depends on
* the provided type parameter, which must be a constant of
* <code>DialogPackageExplorerActionGroup</code>. If the type is
* <code>DialogPackageExplorerActionGroup.MULTI</code>, then the
* description will be very general to describe the situation of
* all the different selected objects as good as possible.
*
* @param type the type of the selected object, must be a constant of
* <code>DialogPackageExplorerActionGroup</code>.
* @return a string describing the operation
*/
public String getDescription(int type) {
IModelElement elem= (IModelElement)getSelectedElements().get(0);
String name= escapeSpecialChars(elem.getElementName());
if (type == DialogPackageExplorerActionGroup.SCRIPT_PROJECT)
return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_ProjectFromBuildpath, name);
if (type == DialogPackageExplorerActionGroup.PACKAGE_FRAGMENT_ROOT || type == DialogPackageExplorerActionGroup.MODIFIED_FRAGMENT_ROOT)
return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_fromBuildpath, name);
return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_FromBuildpath;
}
}