Source Code Cross Referenced for OpenPerspectiveMenu.java in  » IDE-Eclipse » ui-workbench » org » eclipse » ui » actions » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.actions 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2000, 2007 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *******************************************************************************/package org.eclipse.ui.actions;
011:
012:        import org.eclipse.core.runtime.IAdaptable;
013:        import org.eclipse.jface.action.IMenuManager;
014:        import org.eclipse.swt.events.SelectionEvent;
015:        import org.eclipse.ui.IPerspectiveDescriptor;
016:        import org.eclipse.ui.IWorkbenchPreferenceConstants;
017:        import org.eclipse.ui.IWorkbenchWindow;
018:        import org.eclipse.ui.WorkbenchException;
019:        import org.eclipse.ui.internal.WorkbenchMessages;
020:        import org.eclipse.ui.internal.misc.StatusUtil;
021:        import org.eclipse.ui.internal.util.PrefUtil;
022:        import org.eclipse.ui.statushandlers.StatusManager;
023:
024:        /**
025:         * A menu for window creation in the workbench.  
026:         * <p>
027:         * An <code>OpenPerspectiveMenu</code> is used to populate a menu with
028:         * actions that will open a new perspective. If the user selects one of 
029:         * these items either a new page is added to the workbench, a new 
030:         * workbench window is created with the chosen perspective or the current
031:         * perspective will be replaced with the new onw.
032:         * </p><p>
033:         * The visible perspectives within the menu may also be updated dynamically to
034:         * reflect user preference.
035:         * </p><p>
036:         * The input for the page is determined by the value of <code>pageInput</code>.
037:         * The input should be passed into the constructor of this class or set using
038:         * the <code>setPageInput</code> method.
039:         * </p><p>
040:         * This class may be instantiated; it is not intended to be subclassed.
041:         * </p>
042:         * @deprecated  See IWorkbench.showPerspective methods.
043:         */
044:        public class OpenPerspectiveMenu extends PerspectiveMenu {
045:            private IAdaptable pageInput;
046:
047:            private IMenuManager parentMenuManager;
048:
049:            private boolean replaceEnabled = true;
050:
051:            private static String PAGE_PROBLEMS_TITLE = WorkbenchMessages.OpenPerspectiveMenu_pageProblemsTitle;
052:
053:            private static String PAGE_PROBLEMS_MESSAGE = WorkbenchMessages.OpenPerspectiveMenu_errorUnknownInput;
054:
055:            /**
056:             * Constructs a new menu.
057:             */
058:            public OpenPerspectiveMenu(IMenuManager menuManager,
059:                    IWorkbenchWindow window) {
060:                this (window);
061:                this .parentMenuManager = menuManager;
062:            }
063:
064:            /**
065:             * Constructs a new instance of <code>OpenNewPageMenu</code>. 
066:             * <p>
067:             * If this method is used be sure to set the page input by invoking
068:             * <code>setPageInput</code>.  The page input is required when the user
069:             * selects an item in the menu.  At that point the menu will attempt to
070:             * open a new page with the selected perspective and page input.  If there
071:             * is no page input an error dialog will be opened.
072:             * </p>
073:             *
074:             * @param window the window where a new page is created if an item within
075:             *		the menu is selected
076:             */
077:            public OpenPerspectiveMenu(IWorkbenchWindow window) {
078:                this (window, null);
079:                showActive(true);
080:            }
081:
082:            /**
083:             * Constructs a new instance of <code>OpenNewPageMenu</code>.  
084:             *
085:             * @param window the window where a new page is created if an item within
086:             *		the menu is selected
087:             * @param input the page input
088:             */
089:            public OpenPerspectiveMenu(IWorkbenchWindow window, IAdaptable input) {
090:                super (window, "Open New Page Menu");//$NON-NLS-1$
091:                this .pageInput = input;
092:            }
093:
094:            /**
095:             * Return whether or not the menu can be run. Answer true unless the current mode
096:             * is replace and the replaceEnabled flag is false.
097:             */
098:            private boolean canRun() {
099:                if (openPerspectiveSetting().equals(
100:                        IWorkbenchPreferenceConstants.OPEN_PERSPECTIVE_REPLACE)) {
101:                    return replaceEnabled;
102:                }
103:                return true;
104:            }
105:
106:            /**
107:             * Return the current perspective setting.
108:             */
109:            private String openPerspectiveSetting() {
110:                return PrefUtil.getAPIPreferenceStore().getString(
111:                        IWorkbenchPreferenceConstants.OPEN_NEW_PERSPECTIVE);
112:            }
113:
114:            /**
115:             * Runs an action for a particular perspective. Opens the perspective supplied
116:             * in a new window or a new page depending on the workbench preference.
117:             *
118:             * @param desc the selected perspective
119:             */
120:            protected void run(IPerspectiveDescriptor desc) {
121:                openPage(desc, 0);
122:            }
123:
124:            /**
125:             * Runs an action for a particular perspective. Check for shift or control events
126:             * to decide which event to run.
127:             *
128:             * @param desc the selected perspective
129:             * @param event the event sent along with the selection callback
130:             */
131:            protected void run(IPerspectiveDescriptor desc, SelectionEvent event) {
132:                openPage(desc, event.stateMask);
133:            }
134:
135:            /* (non-Javadoc)
136:             * Opens a new page with a particular perspective and input.
137:             */
138:            private void openPage(IPerspectiveDescriptor desc, int keyStateMask) {
139:                // Verify page input.
140:                if (pageInput == null) {
141:                    StatusUtil.handleStatus(PAGE_PROBLEMS_TITLE
142:                            + ": " + PAGE_PROBLEMS_MESSAGE, StatusManager.SHOW); //$NON-NLS-1$
143:                    return;
144:                }
145:
146:                // Open the page.
147:                try {
148:                    getWindow().getWorkbench().showPerspective(desc.getId(),
149:                            getWindow(), pageInput);
150:                } catch (WorkbenchException e) {
151:                    StatusUtil.handleStatus(PAGE_PROBLEMS_TITLE
152:                            + ": " + e.getMessage(), e, //$NON-NLS-1$
153:                            StatusManager.SHOW);
154:                }
155:            }
156:
157:            /**
158:             * Sets the page input.  
159:             *
160:             * @param input the page input
161:             */
162:            public void setPageInput(IAdaptable input) {
163:                pageInput = input;
164:            }
165:
166:            /**
167:             * Set whether replace menu item is enabled within its parent menu.
168:             */
169:            public void setReplaceEnabled(boolean isEnabled) {
170:                if (replaceEnabled != isEnabled) {
171:                    replaceEnabled = isEnabled;
172:                    if (canRun() && parentMenuManager != null) {
173:                        parentMenuManager.update(true);
174:                    }
175:                }
176:            }
177:        }
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