import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
-
/**
- * A base content provider for Java elements. It provides access to the
- * Java element hierarchy without listening to changes in the Java model.
- * If updating the presentation on Java model change is required than
- * clients have to subclass, listen to Java model changes and have to update
- * the UI using corresponding methods provided by the JFace viewers or their
- * own UI presentation.
+ * A base content provider for Java elements. It provides access to the Java
+ * element hierarchy without listening to changes in the Java model. If updating
+ * the presentation on Java model change is required than clients have to
+ * subclass, listen to Java model changes and have to update the UI using
+ * corresponding methods provided by the JFace viewers or their own UI
+ * presentation.
* <p>
* The following Java element hierarchy is surfaced by this content provider:
* <p>
+ *
* <pre>
-Java model (<code>IJavaModel</code>)
- Java project (<code>IJavaProject</code>)
- package fragment root (<code>IPackageFragmentRoot</code>)
- package fragment (<code>IPackageFragment</code>)
- compilation unit (<code>ICompilationUnit</code>)
- binary class file (<code>IClassFile</code>)
+ * Java model (
+ * <code>
+ * IJavaModel
+ * </code>
+ * )
+ * Java project (
+ * <code>
+ * IJavaProject
+ * </code>
+ * )
+ * package fragment root (
+ * <code>
+ * IPackageFragmentRoot
+ * </code>
+ * )
+ * package fragment (
+ * <code>
+ * IPackageFragment
+ * </code>
+ * )
+ * compilation unit (
+ * <code>
+ * ICompilationUnit
+ * </code>
+ * )
+ * binary class file (
+ * <code>
+ * IClassFile
+ * </code>
+ * )
* </pre>
- * </p>
+ *
+ * </p>
* <p>
- * Note that when the entire Java project is declared to be package fragment root,
- * the corresponding package fragment root element that normally appears between the
- * Java project and the package fragments is automatically filtered out.
+ * Note that when the entire Java project is declared to be package fragment
+ * root, the corresponding package fragment root element that normally appears
+ * between the Java project and the package fragments is automatically filtered
+ * out.
* </p>
- * This content provider can optionally return working copy elements for members
- * below compilation units. If enabled, working copy members are returned for those
- * compilation units in the Java element hierarchy for which a shared working copy exists
- * in JDT core.
+ * This content provider can optionally return working copy elements for members
+ * below compilation units. If enabled, working copy members are returned for
+ * those compilation units in the Java element hierarchy for which a shared
+ * working copy exists in JDT core.
*
* @see net.sourceforge.phpdt.ui.IWorkingCopyProvider
* @see JavaCore#getSharedWorkingCopies(net.sourceforge.phpdt.core.IBufferFactory)
*
* @since 2.0
*/
-public class StandardJavaElementContentProvider implements ITreeContentProvider, IWorkingCopyProvider {
+public class StandardJavaElementContentProvider implements
+ ITreeContentProvider, IWorkingCopyProvider {
+
+ protected static final Object[] NO_CHILDREN = new Object[0];
+
+ protected boolean fProvideMembers = false;
- protected static final Object[] NO_CHILDREN= new Object[0];
+ protected boolean fProvideWorkingCopy = false;
- protected boolean fProvideMembers= false;
- protected boolean fProvideWorkingCopy= false;
-
/**
- * Creates a new content provider. The content provider does not
- * provide members of compilation units or class files and it does
- * not provide working copy elements.
- */
+ * Creates a new content provider. The content provider does not provide
+ * members of compilation units or class files and it does not provide
+ * working copy elements.
+ */
public StandardJavaElementContentProvider() {
}
-
+
/**
* Creates a new <code>StandardJavaElementContentProvider</code>.
- *
- * @param provideMembers if <code>true</code> members below compilation units
- * and class files are provided.
- * @param provideWorkingCopy if <code>true</code> the element provider provides
- * working copies members of compilation units which have an associated working
- * copy in JDT core. Otherwise only original elements are provided.
+ *
+ * @param provideMembers
+ * if <code>true</code> members below compilation units and
+ * class files are provided.
+ * @param provideWorkingCopy
+ * if <code>true</code> the element provider provides working
+ * copies members of compilation units which have an associated
+ * working copy in JDT core. Otherwise only original elements are
+ * provided.
*/
- public StandardJavaElementContentProvider(boolean provideMembers, boolean provideWorkingCopy) {
- fProvideMembers= provideMembers;
- fProvideWorkingCopy= provideWorkingCopy;
+ public StandardJavaElementContentProvider(boolean provideMembers,
+ boolean provideWorkingCopy) {
+ fProvideMembers = provideMembers;
+ fProvideWorkingCopy = provideWorkingCopy;
}
-
+
/**
- * Returns whether members are provided when asking
- * for a compilation units or class file for its children.
+ * Returns whether members are provided when asking for a compilation units
+ * or class file for its children.
*
- * @return <code>true</code> if the content provider provides members;
- * otherwise <code>false</code> is returned
+ * @return <code>true</code> if the content provider provides members;
+ * otherwise <code>false</code> is returned
*/
public boolean getProvideMembers() {
return fProvideMembers;
}
/**
- * Sets whether the content provider is supposed to return members
- * when asking a compilation unit or class file for its children.
+ * Sets whether the content provider is supposed to return members when
+ * asking a compilation unit or class file for its children.
*
- * @param b if <code>true</code> then members are provided.
- * If <code>false</code> compilation units and class files are the
- * leaves provided by this content provider.
+ * @param b
+ * if <code>true</code> then members are provided. If
+ * <code>false</code> compilation units and class files are the
+ * leaves provided by this content provider.
*/
public void setProvideMembers(boolean b) {
- fProvideMembers= b;
+ fProvideMembers = b;
}
-
+
/**
- * Returns whether the provided members are from a working
- * copy or the original compilation unit.
+ * Returns whether the provided members are from a working copy or the
+ * original compilation unit.
*
- * @return <code>true</code> if the content provider provides
- * working copy members; otherwise <code>false</code> is
- * returned
+ * @return <code>true</code> if the content provider provides working copy
+ * members; otherwise <code>false</code> is returned
*
* @see #setProvideWorkingCopy(boolean)
*/
}
/**
- * Sets whether the members are provided from a shared working copy
- * that exists for a original compilation unit in the Java element hierarchy.
+ * Sets whether the members are provided from a shared working copy that
+ * exists for a original compilation unit in the Java element hierarchy.
*
- * @param b if <code>true</code> members are provided from a
- * working copy if one exists in JDT core. If <code>false</code> the
- * provider always returns original elements.
+ * @param b
+ * if <code>true</code> members are provided from a working
+ * copy if one exists in JDT core. If <code>false</code> the
+ * provider always returns original elements.
*/
public void setProvideWorkingCopy(boolean b) {
- fProvideWorkingCopy= b;
+ fProvideWorkingCopy = b;
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see IWorkingCopyProvider#providesWorkingCopies()
*/
public boolean providesWorkingCopies() {
return fProvideWorkingCopy;
}
- /* (non-Javadoc)
- * Method declared on IStructuredContentProvider.
+ /*
+ * (non-Javadoc) Method declared on IStructuredContentProvider.
*/
public Object[] getElements(Object parent) {
return getChildren(parent);
}
-
- /* (non-Javadoc)
- * Method declared on IContentProvider.
+
+ /*
+ * (non-Javadoc) Method declared on IContentProvider.
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
- /* (non-Javadoc)
- * Method declared on IContentProvider.
+ /*
+ * (non-Javadoc) Method declared on IContentProvider.
*/
public void dispose() {
}
- /* (non-Javadoc)
- * Method declared on ITreeContentProvider.
+ /*
+ * (non-Javadoc) Method declared on ITreeContentProvider.
*/
public Object[] getChildren(Object element) {
if (!exists(element))
return NO_CHILDREN;
-
+
try {
- if (element instanceof IJavaModel)
- return getJavaProjects((IJavaModel)element);
-
-// if (element instanceof IJavaProject)
-// return getPackageFragmentRoots((IJavaProject)element);
-//
- if (element instanceof IPackageFragmentRoot)
- return getPackageFragments((IPackageFragmentRoot)element);
-
-// if (element instanceof IPackageFragment)
-// return getPackageContents((IPackageFragment)element);
-
+ if (element instanceof IJavaModel)
+ return getJavaProjects((IJavaModel) element);
+
+ // if (element instanceof IJavaProject)
+ // return getPackageFragmentRoots((IJavaProject)element);
+ //
+ if (element instanceof IPackageFragmentRoot)
+ return getPackageFragments((IPackageFragmentRoot) element);
+
+ // if (element instanceof IPackageFragment)
+ // return getPackageContents((IPackageFragment)element);
+
if (element instanceof IFolder)
- return getResources((IFolder)element);
-
- if (fProvideMembers && element instanceof ISourceReference && element instanceof IParent) {
+ return getResources((IFolder) element);
+
+ if (fProvideMembers && element instanceof ISourceReference
+ && element instanceof IParent) {
if (fProvideWorkingCopy && element instanceof ICompilationUnit) {
- element= JavaModelUtil.toWorkingCopy((ICompilationUnit) element);
+ element = JavaModelUtil
+ .toWorkingCopy((ICompilationUnit) element);
}
- return ((IParent)element).getChildren();
+ return ((IParent) element).getChildren();
}
} catch (JavaModelException e) {
return NO_CHILDREN;
- }
- return NO_CHILDREN;
+ }
+ return NO_CHILDREN;
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see ITreeContentProvider
*/
public boolean hasChildren(Object element) {
if (fProvideMembers) {
// assume CUs and class files are never empty
- if (element instanceof ICompilationUnit ){
-// ||
-// element instanceof IClassFile) {
+ if (element instanceof ICompilationUnit) {
+ // ||
+ // element instanceof IClassFile) {
return true;
}
} else {
// don't allow to drill down into a compilation unit or class file
if (element instanceof ICompilationUnit ||
-// element instanceof IClassFile ||
- element instanceof IFile)
- return false;
+ // element instanceof IClassFile ||
+ element instanceof IFile)
+ return false;
}
-
+
if (element instanceof IJavaProject) {
- IJavaProject jp= (IJavaProject)element;
+ IJavaProject jp = (IJavaProject) element;
if (!jp.getProject().isOpen()) {
return false;
- }
+ }
}
-
+
if (element instanceof IParent) {
try {
- // when we have Java children return true, else we fetch all the children
- if (((IParent)element).hasChildren())
+ // when we have Java children return true, else we fetch all the
+ // children
+ if (((IParent) element).hasChildren())
return true;
- } catch(JavaModelException e) {
+ } catch (JavaModelException e) {
return true;
}
}
- Object[] children= getChildren(element);
+ Object[] children = getChildren(element);
return (children != null) && children.length > 0;
}
-
- /* (non-Javadoc)
- * Method declared on ITreeContentProvider.
+
+ /*
+ * (non-Javadoc) Method declared on ITreeContentProvider.
*/
public Object getParent(Object element) {
if (!exists(element))
return null;
- return internalGetParent(element);
+ return internalGetParent(element);
}
-
- private Object[] getPackageFragments(IPackageFragmentRoot root) throws JavaModelException {
- IJavaElement[] fragments= root.getChildren();
-// Object[] nonJavaResources= root.getNonJavaResources();
-// if (nonJavaResources == null)
- return fragments;
-// return concatenate(fragments, nonJavaResources);
+
+ private Object[] getPackageFragments(IPackageFragmentRoot root)
+ throws JavaModelException {
+ IJavaElement[] fragments = root.getChildren();
+ // Object[] nonJavaResources= root.getNonJavaResources();
+ // if (nonJavaResources == null)
+ return fragments;
+ // return concatenate(fragments, nonJavaResources);
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
-// protected Object[] getPackageFragmentRoots(IJavaProject project) throws JavaModelException {
-// if (!project.getProject().isOpen())
-// return NO_CHILDREN;
-//
-// IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();
-// List list= new ArrayList(roots.length);
-// // filter out package fragments that correspond to projects and
-// // replace them with the package fragments directly
-// for (int i= 0; i < roots.length; i++) {
-// IPackageFragmentRoot root= (IPackageFragmentRoot)roots[i];
-// if (isProjectPackageFragmentRoot(root)) {
-// Object[] children= root.getChildren();
-// for (int k= 0; k < children.length; k++)
-// list.add(children[k]);
-// }
-// else if (hasChildren(root)) {
-// list.add(root);
-// }
-// }
-// return concatenate(list.toArray(), project.getNonJavaResources());
-// }
-
+ // protected Object[] getPackageFragmentRoots(IJavaProject project) throws
+ // JavaModelException {
+ // if (!project.getProject().isOpen())
+ // return NO_CHILDREN;
+ //
+ // IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();
+ // List list= new ArrayList(roots.length);
+ // // filter out package fragments that correspond to projects and
+ // // replace them with the package fragments directly
+ // for (int i= 0; i < roots.length; i++) {
+ // IPackageFragmentRoot root= (IPackageFragmentRoot)roots[i];
+ // if (isProjectPackageFragmentRoot(root)) {
+ // Object[] children= root.getChildren();
+ // for (int k= 0; k < children.length; k++)
+ // list.add(children[k]);
+ // }
+ // else if (hasChildren(root)) {
+ // list.add(root);
+ // }
+ // }
+ // return concatenate(list.toArray(), project.getNonJavaResources());
+ // }
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected Object[] getJavaProjects(IJavaModel jm) throws JavaModelException {
return jm.getJavaProjects();
}
-
-// private Object[] getPackageContents(IPackageFragment fragment) throws JavaModelException {
-// if (fragment.getKind() == IPackageFragmentRoot.K_SOURCE) {
-// return concatenate(fragment.getCompilationUnits(), fragment.getNonJavaResources());
-// }
-// return concatenate(fragment.getClassFiles(), fragment.getNonJavaResources());
-// }
-
+
+ // private Object[] getPackageContents(IPackageFragment fragment) throws
+ // JavaModelException {
+ // if (fragment.getKind() == IPackageFragmentRoot.K_SOURCE) {
+ // return concatenate(fragment.getCompilationUnits(),
+ // fragment.getNonJavaResources());
+ // }
+ // return concatenate(fragment.getClassFiles(),
+ // fragment.getNonJavaResources());
+ // }
+
private Object[] getResources(IFolder folder) {
try {
// filter out folders that are package fragment roots
- Object[] members= folder.members();
- List nonJavaResources= new ArrayList();
- for (int i= 0; i < members.length; i++) {
- Object o= members[i];
- // A folder can also be a package fragement root in the following case
+ Object[] members = folder.members();
+ List nonJavaResources = new ArrayList();
+ for (int i = 0; i < members.length; i++) {
+ Object o = members[i];
+ // A folder can also be a package fragement root in the
+ // following case
// Project
- // + src <- source folder
- // + excluded <- excluded from class path
- // + included <- a new source folder.
- // Included is a member of excluded, but since it is rendered as a source
+ // + src <- source folder
+ // + excluded <- excluded from class path
+ // + included <- a new source folder.
+ // Included is a member of excluded, but since it is rendered as
+ // a source
// folder we have to exclude it as a normal child.
if (o instanceof IFolder) {
- IJavaElement element= JavaCore.create((IFolder)o);
- if (element instanceof IPackageFragmentRoot && element.exists()) {
+ IJavaElement element = JavaCore.create((IFolder) o);
+ if (element instanceof IPackageFragmentRoot
+ && element.exists()) {
continue;
}
}
nonJavaResources.add(o);
}
return nonJavaResources.toArray();
- } catch(CoreException e) {
+ } catch (CoreException e) {
return NO_CHILDREN;
}
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected boolean isClassPathChange(IJavaElementDelta delta) {
-
+
// need to test the flags only for package fragment roots
if (delta.getElement().getElementType() != IJavaElement.PACKAGE_FRAGMENT_ROOT)
return false;
-
- int flags= delta.getFlags();
- return (delta.getKind() == IJavaElementDelta.CHANGED &&
- ((flags & IJavaElementDelta.F_ADDED_TO_CLASSPATH) != 0) ||
- ((flags & IJavaElementDelta.F_REMOVED_FROM_CLASSPATH) != 0) ||
- ((flags & IJavaElementDelta.F_REORDER) != 0));
+
+ int flags = delta.getFlags();
+ return (delta.getKind() == IJavaElementDelta.CHANGED
+ && ((flags & IJavaElementDelta.F_ADDED_TO_CLASSPATH) != 0)
+ || ((flags & IJavaElementDelta.F_REMOVED_FROM_CLASSPATH) != 0) || ((flags & IJavaElementDelta.F_REORDER) != 0));
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected Object skipProjectPackageFragmentRoot(IPackageFragmentRoot root) {
try {
if (isProjectPackageFragmentRoot(root))
- return root.getParent();
+ return root.getParent();
return root;
- } catch(JavaModelException e) {
+ } catch (JavaModelException e) {
return root;
}
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
- protected boolean isPackageFragmentEmpty(IJavaElement element) throws JavaModelException {
+ protected boolean isPackageFragmentEmpty(IJavaElement element)
+ throws JavaModelException {
if (element instanceof IPackageFragment) {
- IPackageFragment fragment= (IPackageFragment)element;
- if (!(fragment.hasChildren() ) )
-// ||
-// fragment.getNonJavaResources().length > 0) && fragment.hasSubpackages())
+ IPackageFragment fragment = (IPackageFragment) element;
+ if (!(fragment.hasChildren()))
+ // ||
+ // fragment.getNonJavaResources().length > 0) &&
+ // fragment.hasSubpackages())
return true;
}
return false;
}
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
- protected boolean isProjectPackageFragmentRoot(IPackageFragmentRoot root) throws JavaModelException {
- IResource resource= root.getResource();
+ protected boolean isProjectPackageFragmentRoot(IPackageFragmentRoot root)
+ throws JavaModelException {
+ IResource resource = root.getResource();
return (resource instanceof IProject);
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected boolean exists(Object element) {
if (element == null) {
return false;
}
if (element instanceof IResource) {
- return ((IResource)element).exists();
+ return ((IResource) element).exists();
}
if (element instanceof IJavaElement) {
- return ((IJavaElement)element).exists();
+ return ((IJavaElement) element).exists();
}
return true;
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected Object internalGetParent(Object element) {
if (element instanceof IJavaProject) {
- return ((IJavaProject)element).getJavaModel();
+ return ((IJavaProject) element).getJavaModel();
}
// try to map resources to the containing package fragment
if (element instanceof IResource) {
- IResource parent= ((IResource)element).getParent();
- IJavaElement jParent= JavaCore.create(parent);
+ IResource parent = ((IResource) element).getParent();
+ IJavaElement jParent = JavaCore.create(parent);
// http://bugs.eclipse.org/bugs/show_bug.cgi?id=31374
- if (jParent != null && jParent.exists())
+ if (jParent != null && jParent.exists())
return jParent;
return parent;
}
- // for package fragments that are contained in a project package fragment
+ // for package fragments that are contained in a project package
+ // fragment
// we have to skip the package fragment root as the parent.
if (element instanceof IPackageFragment) {
- IPackageFragmentRoot parent= (IPackageFragmentRoot)((IPackageFragment)element).getParent();
+ IPackageFragmentRoot parent = (IPackageFragmentRoot) ((IPackageFragment) element)
+ .getParent();
return skipProjectPackageFragmentRoot(parent);
}
if (element instanceof IJavaElement) {
- IJavaElement candidate= ((IJavaElement)element).getParent();
- // If the parent is a CU we might have shown working copy elements below CU level. If so
+ IJavaElement candidate = ((IJavaElement) element).getParent();
+ // If the parent is a CU we might have shown working copy elements
+ // below CU level. If so
// return the original element instead of the working copy.
- if (candidate != null && candidate.getElementType() == IJavaElement.COMPILATION_UNIT) {
- candidate= JavaModelUtil.toOriginal((ICompilationUnit) candidate);
+ if (candidate != null
+ && candidate.getElementType() == IJavaElement.COMPILATION_UNIT) {
+ candidate = JavaModelUtil
+ .toOriginal((ICompilationUnit) candidate);
}
return candidate;
}
return null;
}
-
+
/**
- * Note: This method is for internal use only. Clients should not call this method.
+ * Note: This method is for internal use only. Clients should not call this
+ * method.
*/
protected static Object[] concatenate(Object[] a1, Object[] a2) {
- int a1Len= a1.length;
- int a2Len= a2.length;
- Object[] res= new Object[a1Len + a2Len];
+ int a1Len = a1.length;
+ int a2Len = a2.length;
+ Object[] res = new Object[a1Len + a2Len];
System.arraycopy(a1, 0, res, 0, a1Len);
- System.arraycopy(a2, 0, res, a1Len, a2Len);
+ System.arraycopy(a2, 0, res, a1Len, a2Len);
return res;
}
-
}
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