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Diffstat (limited to 'org.eclipse.text/src/org/eclipse/jface/text/link/LinkedModeManager.java')
-rw-r--r--org.eclipse.text/src/org/eclipse/jface/text/link/LinkedModeManager.java232
1 files changed, 0 insertions, 232 deletions
diff --git a/org.eclipse.text/src/org/eclipse/jface/text/link/LinkedModeManager.java b/org.eclipse.text/src/org/eclipse/jface/text/link/LinkedModeManager.java
deleted file mode 100644
index 6172996dab9..00000000000
--- a/org.eclipse.text/src/org/eclipse/jface/text/link/LinkedModeManager.java
+++ /dev/null
@@ -1,232 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jface.text.link;
-
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.Map;
-import java.util.Set;
-import java.util.Stack;
-
-import org.eclipse.jface.text.Assert;
-import org.eclipse.jface.text.IDocument;
-
-
-/**
- * A linked mode manager ensures exclusive access of linked position infrastructures to documents. There
- * is at most one <code>LinkedModeManager</code> installed on the same document. The <code>getManager</code>
- * methods will return the existing instance if any of the specified documents already have an installed
- * manager.
- *
- * @since 3.0
- */
-class LinkedModeManager {
-
- /**
- * Our implementation of <code>ILinkedModeListener</code>.
- */
- private class Listener implements ILinkedModeListener {
-
- /*
- * @see org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel.ILinkedModeListener#left(org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel, int)
- */
- public void left(LinkedModeModel model, int flags) {
- LinkedModeManager.this.left(model, flags);
- }
-
- /*
- * @see org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel.ILinkedModeListener#suspend(org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel)
- */
- public void suspend(LinkedModeModel model) {
- // not interested
- }
-
- /*
- * @see org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel.ILinkedModeListener#resume(org.eclipse.jdt.internal.ui.text.link2.LinkedModeModel, int)
- */
- public void resume(LinkedModeModel model, int flags) {
- // not interested
- }
-
- }
-
- /** Global map from documents to managers. */
- private static Map fManagers= new HashMap();
-
- /**
- * Returns whether there exists a <code>LinkedModeManager</code> on <code>document</code>.
- *
- * @param document the document of interest
- * @return <code>true</code> if there exists a <code>LinkedModeManager</code> on <code>document</code>, <code>false</code> otherwise
- */
- public static boolean hasManager(IDocument document) {
- return fManagers.get(document) != null;
- }
-
- /**
- * Returns whether there exists a <code>LinkedModeManager</code> on any of the <code>documents</code>.
- *
- * @param documents the documents of interest
- * @return <code>true</code> if there exists a <code>LinkedModeManager</code> on any of the <code>documents</code>, <code>false</code> otherwise
- */
- public static boolean hasManager(IDocument[] documents) {
- for (int i= 0; i < documents.length; i++) {
- if (hasManager(documents[i]))
- return true;
- }
- return false;
- }
-
- /**
- * Returns the manager for the given documents. If <code>force</code> is
- * <code>true</code>, any existing conflicting managers are canceled, otherwise,
- * the method may return <code>null</code> if there are conflicts.
- *
- * @param documents the documents of interest
- * @param force whether to kill any conflicting managers
- * @return a manager able to cover the requested documents, or <code>null</code> if there is a conflict and <code>force</code> was set to <code>false</code>
- */
- public static LinkedModeManager getLinkedManager(IDocument[] documents, boolean force) {
- if (documents == null || documents.length == 0)
- return null;
-
- Set mgrs= new HashSet();
- LinkedModeManager mgr= null;
- for (int i= 0; i < documents.length; i++) {
- mgr= (LinkedModeManager) fManagers.get(documents[i]);
- if (mgr != null)
- mgrs.add(mgr);
- }
- if (mgrs.size() > 1)
- if (force) {
- for (Iterator it= mgrs.iterator(); it.hasNext(); ) {
- LinkedModeManager m= (LinkedModeManager) it.next();
- m.closeAllEnvironments();
- }
- } else {
- return null;
- }
-
- if (mgrs.size() == 0)
- mgr= new LinkedModeManager();
-
- for (int i= 0; i < documents.length; i++)
- fManagers.put(documents[i], mgr);
-
- return mgr;
- }
-
- /**
- * Cancels any linked mode manager for the specified document.
- *
- * @param document the document whose <code>LinkedModeManager</code> should be cancelled
- */
- public static void cancelManager(IDocument document) {
- LinkedModeManager mgr= (LinkedModeManager) fManagers.get(document);
- if (mgr != null)
- mgr.closeAllEnvironments();
- }
-
- /** The hierarchy of environments managed by this manager. */
- private Stack fEnvironments= new Stack();
- private Listener fListener= new Listener();
-
- /**
- * Notify the manager about a leaving model.
- *
- * @param model
- * @param flags
- */
- private void left(LinkedModeModel model, int flags) {
- if (!fEnvironments.contains(model))
- return;
-
- while (!fEnvironments.isEmpty()) {
- LinkedModeModel env= (LinkedModeModel) fEnvironments.pop();
- if (env == model)
- break;
- else
- env.exit(ILinkedModeListener.NONE);
- }
-
- if (fEnvironments.isEmpty()) {
- removeManager();
- }
- }
-
- private void closeAllEnvironments() {
- while (!fEnvironments.isEmpty()) {
- LinkedModeModel env= (LinkedModeModel) fEnvironments.pop();
- env.exit(ILinkedModeListener.NONE);
- }
-
- removeManager();
- }
-
- private void removeManager() {
- for (Iterator it= fManagers.keySet().iterator(); it.hasNext();) {
- IDocument doc= (IDocument) it.next();
- if (fManagers.get(doc) == this)
- it.remove();
- }
- }
-
- /**
- * Tries to nest the given <code>LinkedModeModel</code> onto the top of
- * the stack of environments managed by the receiver. If <code>force</code>
- * is <code>true</code>, any environments on the stack that create a conflict
- * are killed.
- *
- * @param model the model to nest
- * @param force whether to force the addition of the model
- * @return <code>true</code> if nesting was successful, <code>false</code> otherwise (only possible if <code>force</code> is <code>false</code>
- */
- public boolean nestEnvironment(LinkedModeModel model, boolean force) {
- Assert.isNotNull(model);
-
- try {
- while (true) {
- if (fEnvironments.isEmpty()) {
- model.addLinkingListener(fListener);
- fEnvironments.push(model);
- return true;
- }
-
- LinkedModeModel top= (LinkedModeModel) fEnvironments.peek();
- if (model.canNestInto(top)) {
- model.addLinkingListener(fListener);
- fEnvironments.push(model);
- return true;
- } else if (!force) {
- return false;
- } else { // force
- fEnvironments.pop();
- top.exit(ILinkedModeListener.NONE);
- // continue;
- }
- }
- } finally {
- // if we remove any, make sure the new one got inserted
- Assert.isTrue(fEnvironments.size() > 0);
- }
- }
-
- /**
- * @return
- */
- public LinkedModeModel getTopEnvironment() {
- if (fEnvironments.isEmpty())
- return null;
- else
- return (LinkedModeModel) fEnvironments.peek();
- }
-}

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