import org.eclipse.core.runtime.jobs.ISchedulingRule;
/**
- * <p>This abstract class implements behavior common to <code>CreateElementInCUOperations</code>.
- * To create a compilation unit, or an element contained in a compilation unit, the
- * source code for the entire compilation unit is updated and saved.
- *
- * <p>The element being created can be positioned relative to an existing
- * element in the compilation unit via the methods <code>#createAfter</code>
- * and <code>#createBefore</code>. By default, the new element is positioned
- * as the last child of its parent element.
- *
+ * <p>
+ * This abstract class implements behavior common to
+ * <code>CreateElementInCUOperations</code>. To create a compilation unit, or
+ * an element contained in a compilation unit, the source code for the entire
+ * compilation unit is updated and saved.
+ *
+ * <p>
+ * The element being created can be positioned relative to an existing element
+ * in the compilation unit via the methods <code>#createAfter</code> and
+ * <code>#createBefore</code>. By default, the new element is positioned as
+ * the last child of its parent element.
+ *
*/
public abstract class CreateElementInCUOperation extends JavaModelOperation {
/**
* The compilation unit DOM used for this operation
*/
protected IDOMCompilationUnit fCUDOM;
+
/**
- * A constant meaning to position the new element
- * as the last child of its parent element.
+ * A constant meaning to position the new element as the last child of its
+ * parent element.
*/
protected static final int INSERT_LAST = 1;
+
/**
- * A constant meaning to position the new element
- * after the element defined by <code>fAnchorElement</code>.
+ * A constant meaning to position the new element after the element defined
+ * by <code>fAnchorElement</code>.
*/
protected static final int INSERT_AFTER = 2;
/**
- * A constant meaning to position the new element
- * before the element defined by <code>fAnchorElement</code>.
+ * A constant meaning to position the new element before the element defined
+ * by <code>fAnchorElement</code>.
*/
protected static final int INSERT_BEFORE = 3;
+
/**
- * One of the position constants, describing where
- * to position the newly created element.
+ * One of the position constants, describing where to position the newly
+ * created element.
*/
protected int fInsertionPolicy = INSERT_LAST;
+
/**
- * The element that the newly created element is
- * positioned relative to, as described by
- * <code>fInsertPosition</code>, or <code>null</code>
- * if the newly created element will be positioned
- * last.
+ * The element that the newly created element is positioned relative to, as
+ * described by <code>fInsertPosition</code>, or <code>null</code> if
+ * the newly created element will be positioned last.
*/
protected IJavaElement fAnchorElement = null;
+
/**
- * A flag indicating whether creation of a new element occurred.
- * A request for creating a duplicate element would request in this
- * flag being set to <code>false</code>. Ensures that no deltas are generated
- * when creation does not occur.
+ * A flag indicating whether creation of a new element occurred. A request
+ * for creating a duplicate element would request in this flag being set to
+ * <code>false</code>. Ensures that no deltas are generated when creation
+ * does not occur.
*/
protected boolean fCreationOccurred = true;
+
/**
* The element that is being created.
*/
protected DOMNode fCreatedElement;
+
/**
* The position of the element that is being created.
*/
protected int fInsertionPosition = -1;
+
/**
- * The number of characters the new element replaces,
- * or 0 if the new element is inserted,
- * or -1 if the new element is append to the end of the CU.
+ * The number of characters the new element replaces, or 0 if the new
+ * element is inserted, or -1 if the new element is append to the end of the
+ * CU.
*/
protected int fReplacementLength = -1;
+
/**
- * Constructs an operation that creates a Java Language Element with
- * the specified parent, contained within a compilation unit.
+ * Constructs an operation that creates a Java Language Element with the
+ * specified parent, contained within a compilation unit.
*/
public CreateElementInCUOperation(IJavaElement parentElement) {
- super(null, new IJavaElement[]{parentElement});
+ super(null, new IJavaElement[] { parentElement });
initializeDefaultPosition();
}
+
/**
* Only allow cancelling if this operation is not nested.
*/
super.checkCanceled();
}
}
+
/**
- * Instructs this operation to position the new element after
- * the given sibling, or to add the new element as the last child
- * of its parent if <code>null</code>.
+ * Instructs this operation to position the new element after the given
+ * sibling, or to add the new element as the last child of its parent if
+ * <code>null</code>.
*/
public void createAfter(IJavaElement sibling) {
setRelativePosition(sibling, INSERT_AFTER);
}
+
/**
- * Instructs this operation to position the new element before
- * the given sibling, or to add the new element as the last child
- * of its parent if <code>null</code>.
+ * Instructs this operation to position the new element before the given
+ * sibling, or to add the new element as the last child of its parent if
+ * <code>null</code>.
*/
public void createBefore(IJavaElement sibling) {
setRelativePosition(sibling, INSERT_BEFORE);
}
+
/**
- * Execute the operation - generate new source for the compilation unit
- * and save the results.
- *
- * @exception JavaModelException if the operation is unable to complete
+ * Execute the operation - generate new source for the compilation unit and
+ * save the results.
+ *
+ * @exception JavaModelException
+ * if the operation is unable to complete
*/
protected void executeOperation() throws JavaModelException {
try {
ICompilationUnit unit = getCompilationUnit();
generateNewCompilationUnitDOM(unit);
if (fCreationOccurred) {
- //a change has really occurred
+ // a change has really occurred
IBuffer buffer = unit.getBuffer();
- if (buffer == null) return;
+ if (buffer == null)
+ return;
char[] bufferContents = buffer.getCharacters();
- if (bufferContents == null) return;
- char[] elementContents = net.sourceforge.phpdt.internal.core.util.Util.normalizeCRs(fCreatedElement.getCharacters(), bufferContents);
+ if (bufferContents == null)
+ return;
+ char[] elementContents = net.sourceforge.phpdt.internal.core.util.Util
+ .normalizeCRs(fCreatedElement.getCharacters(),
+ bufferContents);
switch (fReplacementLength) {
- case -1 :
- // element is append at the end
- buffer.append(elementContents);
- break;
- case 0 :
- // element is inserted
- buffer.replace(fInsertionPosition, 0, elementContents);
- break;
- default :
- // element is replacing the previous one
- buffer.replace(fInsertionPosition, fReplacementLength, elementContents);
+ case -1:
+ // element is append at the end
+ buffer.append(elementContents);
+ break;
+ case 0:
+ // element is inserted
+ buffer.replace(fInsertionPosition, 0, elementContents);
+ break;
+ default:
+ // element is replacing the previous one
+ buffer.replace(fInsertionPosition, fReplacementLength,
+ elementContents);
}
unit.save(null, false);
boolean isWorkingCopy = unit.isWorkingCopy();
this.setAttribute(HAS_MODIFIED_RESOURCE_ATTR, TRUE);
worked(1);
resultElements = generateResultHandles();
- if (!isWorkingCopy // if unit is working copy, then save will have already fired the delta
- && !Util.isExcluded(unit)
- && unit.getParent().exists()) {
+ if (!isWorkingCopy // if unit is working copy, then save will
+ // have already fired the delta
+ && !Util.isExcluded(unit) && unit.getParent().exists()) {
for (int i = 0; i < resultElements.length; i++) {
delta.added(resultElements[i]);
}
addDelta(delta);
} // else unit is created outside classpath
- // non-java resource delta will be notified by delta processor
+ // non-java resource delta will be notified by delta processor
}
} finally {
done();
}
}
+
/**
* Returns a JDOM document fragment for the element being created.
*/
protected abstract IDOMNode generateElementDOM() throws JavaModelException;
+
/**
- * Returns the DOM with the new source to use for the given compilation unit.
+ * Returns the DOM with the new source to use for the given compilation
+ * unit.
*/
- protected void generateNewCompilationUnitDOM(ICompilationUnit cu) throws JavaModelException {
+ protected void generateNewCompilationUnitDOM(ICompilationUnit cu)
+ throws JavaModelException {
IBuffer buffer = cu.getBuffer();
- if (buffer == null) return;
+ if (buffer == null)
+ return;
char[] prevSource = buffer.getCharacters();
- if (prevSource == null) return;
-
+ if (prevSource == null)
+ return;
+
// create a JDOM for the compilation unit
- fCUDOM = (new DOMFactory()).createCompilationUnit(prevSource, cu.getElementName());
+ fCUDOM = (new DOMFactory()).createCompilationUnit(prevSource, cu
+ .getElementName());
IDOMNode child = generateElementDOM();
if (child != null) {
insertDOMNode(fCUDOM, child);
}
worked(1);
}
+
/**
* Creates and returns the handle for the element this operation created.
*/
protected abstract IJavaElement generateResultHandle();
+
/**
* Creates and returns the handles for the elements this operation created.
*/
protected IJavaElement[] generateResultHandles() throws JavaModelException {
- return new IJavaElement[]{generateResultHandle()};
+ return new IJavaElement[] { generateResultHandle() };
}
+
/**
* Returns the compilation unit in which the new element is being created.
*/
protected ICompilationUnit getCompilationUnit() {
return getCompilationUnitFor(getParentElement());
}
+
/**
* Returns the amount of work for the main task of this operation for
* progress reporting.
*/
- protected int getMainAmountOfWork(){
+ protected int getMainAmountOfWork() {
return 2;
}
+
/**
- * Returns the name of the main task of this operation for
- * progress reporting.
+ * Returns the name of the main task of this operation for progress
+ * reporting.
*/
public abstract String getMainTaskName();
-
+
protected ISchedulingRule getSchedulingRule() {
IResource resource = getCompilationUnit().getResource();
IWorkspace workspace = resource.getWorkspace();
return workspace.getRuleFactory().modifyRule(resource);
}
+
/**
* Returns the elements created by this operation.
*/
public IJavaElement[] getResultElements() {
return resultElements;
}
+
/**
- * Sets the default position in which to create the new type
- * member. By default, the new element is positioned as the
- * last child of the parent element in which it is created.
- * Operations that require a different default position must
- * override this method.
+ * Sets the default position in which to create the new type member. By
+ * default, the new element is positioned as the last child of the parent
+ * element in which it is created. Operations that require a different
+ * default position must override this method.
*/
protected void initializeDefaultPosition() {
-
+
}
+
/**
- * Inserts the given child into the given JDOM,
- * based on the position settings of this operation.
- *
+ * Inserts the given child into the given JDOM, based on the position
+ * settings of this operation.
+ *
* @see createAfter(IJavaElement)
* @see createBefore(IJavaElement);
*/
protected void insertDOMNode(IDOMNode parent, IDOMNode child) {
if (fInsertionPolicy != INSERT_LAST) {
- IDOMNode sibling = ((JavaElement)fAnchorElement).findNode(fCUDOM);
+ IDOMNode sibling = ((JavaElement) fAnchorElement).findNode(fCUDOM);
if (sibling != null && fInsertionPolicy == INSERT_AFTER) {
sibling = sibling.getNextNode();
}
if (sibling != null) {
sibling.insertSibling(child);
- fCreatedElement = (DOMNode)child;
- fInsertionPosition = ((DOMNode)sibling).getStartPosition();
+ fCreatedElement = (DOMNode) child;
+ fInsertionPosition = ((DOMNode) sibling).getStartPosition();
fReplacementLength = 0;
return;
}
}
- //add as the last element of the parent
+ // add as the last element of the parent
parent.addChild(child);
- fCreatedElement = (DOMNode)child;
- fInsertionPosition = ((DOMNode)parent).getInsertionPosition();
- // fInsertionPosition = lastChild == null ? ((DOMNode)parent).getInsertionPosition() : lastChild.getInsertionPosition();
+ fCreatedElement = (DOMNode) child;
+ fInsertionPosition = ((DOMNode) parent).getInsertionPosition();
+ // fInsertionPosition = lastChild == null ?
+ // ((DOMNode)parent).getInsertionPosition() :
+ // lastChild.getInsertionPosition();
fReplacementLength = parent.getParent() == null ? -1 : 0;
}
+
/**
- * Sets the name of the <code>DOMNode</code> that will be used to
- * create this new element.
- * Used by the <code>CopyElementsOperation</code> for renaming.
- * Only used for <code>CreateTypeMemberOperation</code>
+ * Sets the name of the <code>DOMNode</code> that will be used to create
+ * this new element. Used by the <code>CopyElementsOperation</code> for
+ * renaming. Only used for <code>CreateTypeMemberOperation</code>
*/
protected void setAlteredName(String newName) {
}
+
/**
- * Instructs this operation to position the new element relative
- * to the given sibling, or to add the new element as the last child
- * of its parent if <code>null</code>. The <code>position</code>
- * must be one of the position constants.
+ * Instructs this operation to position the new element relative to the
+ * given sibling, or to add the new element as the last child of its parent
+ * if <code>null</code>. The <code>position</code> must be one of the
+ * position constants.
*/
- protected void setRelativePosition(IJavaElement sibling, int policy) throws IllegalArgumentException {
+ protected void setRelativePosition(IJavaElement sibling, int policy)
+ throws IllegalArgumentException {
if (sibling == null) {
fAnchorElement = null;
fInsertionPolicy = INSERT_LAST;
fInsertionPolicy = policy;
}
}
+
/**
- * Possible failures: <ul>
- * <li>NO_ELEMENTS_TO_PROCESS - the compilation unit supplied to the operation is
- * <code>null</code>.
- * <li>INVALID_NAME - no name, a name was null or not a valid
- * import declaration name.
- * <li>INVALID_SIBLING - the sibling provided for positioning is not valid.
+ * Possible failures:
+ * <ul>
+ * <li>NO_ELEMENTS_TO_PROCESS - the compilation unit supplied to the
+ * operation is <code>null</code>.
+ * <li>INVALID_NAME - no name, a name was null or not a valid import
+ * declaration name.
+ * <li>INVALID_SIBLING - the sibling provided for positioning is not valid.
* </ul>
+ *
* @see IJavaModelStatus
* @see JavaConventions
*/
public IJavaModelStatus verify() {
if (getParentElement() == null) {
- return new JavaModelStatus(IJavaModelStatusConstants.NO_ELEMENTS_TO_PROCESS);
+ return new JavaModelStatus(
+ IJavaModelStatusConstants.NO_ELEMENTS_TO_PROCESS);
}
if (fAnchorElement != null) {
IJavaElement domPresentParent = fAnchorElement.getParent();
domPresentParent = domPresentParent.getParent();
}
if (!domPresentParent.equals(getParentElement())) {
- return new JavaModelStatus(IJavaModelStatusConstants.INVALID_SIBLING, fAnchorElement);
+ return new JavaModelStatus(
+ IJavaModelStatusConstants.INVALID_SIBLING,
+ fAnchorElement);
}
}
return JavaModelStatus.VERIFIED_OK;
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