Home | History | Annotate | Download | only in build 
      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.ide.eclipse.adt.internal.build;
     17 
     18 import com.android.ide.eclipse.adt.internal.editors.IconFactory;
     19 
     20 import org.eclipse.jface.dialogs.IDialogConstants;
     21 import org.eclipse.jface.dialogs.IMessageProvider;
     22 import org.eclipse.jface.dialogs.MessageDialog;
     23 import org.eclipse.jface.dialogs.TitleAreaDialog;
     24 import org.eclipse.swt.SWT;
     25 import org.eclipse.swt.events.SelectionEvent;
     26 import org.eclipse.swt.events.SelectionListener;
     27 import org.eclipse.swt.graphics.Image;
     28 import org.eclipse.swt.graphics.Point;
     29 import org.eclipse.swt.layout.GridData;
     30 import org.eclipse.swt.layout.GridLayout;
     31 import org.eclipse.swt.widgets.Composite;
     32 import org.eclipse.swt.widgets.Control;
     33 import org.eclipse.swt.widgets.Link;
     34 import org.eclipse.swt.widgets.Shell;
     35 import org.eclipse.ui.IWorkbench;
     36 import org.eclipse.ui.PlatformUI;
     37 import org.eclipse.ui.browser.IWebBrowser;
     38 
     39 import java.net.URL;
     40 
     41 /**
     42  * Dialog shown by the {@link ConvertSwitchQuickFixProcessor}. This is a custom
     43  * dialog rather than a plain {@link MessageDialog} such that we can show a link
     44  * and point to a web page for more info.
     45  */
     46 class ConvertSwitchDialog extends TitleAreaDialog implements SelectionListener {
     47     /** URL containing more info */
     48     private static final String URL = "http://tools.android.com/tips/non-constant-fields"; //$NON-NLS-1$
     49 
     50     private final String mField;
     51 
     52     private Link mLink;
     53 
     54     /**
     55      * Create the dialog.
     56      * @param parentShell the parent shell
     57      * @param field the field name we're warning about
     58      */
     59     public ConvertSwitchDialog(Shell parentShell, String field) {
     60         super(parentShell);
     61         mField = field;
     62         Image image = IconFactory.getInstance().getIcon("android-64"); //$NON-NLS-1$
     63         setTitleImage(image);
     64     }
     65 
     66     @Override
     67     protected Control createDialogArea(Composite parent) {
     68         String text = String.format(
     69             "As of ADT 14, the resource fields (such as %1$s) are no longer constants " +
     70             "when defined in library projects. This is necessary to make library " +
     71             "projects reusable without recompiling them.\n" +
     72             "\n" +
     73             "One consequence of this is that you can no longer use the fields directly " +
     74             "in switch statements. You must use an if-else chain instead.\n" +
     75             "\n" +
     76             "Eclipse can automatically convert from a switch statement to an if-else " +
     77             "statement. Just place the caret on the switch keyword and invoke " +
     78             "Quick Fix (Ctrl-1 on Windows and Linux, Cmd-1 on Mac), then select " +
     79             "\"Convert 'switch' to 'if-else'\".\n" +
     80             "\n" +
     81             "For more information, see <a href=\"" + URL + "\">" + URL + "</a>",
     82             mField);
     83 
     84         Composite area = (Composite) super.createDialogArea(parent);
     85         Composite container = new Composite(area, SWT.NONE);
     86         container.setLayout(new GridLayout(1, false));
     87         container.setLayoutData(new GridData(GridData.FILL_BOTH));
     88 
     89         mLink = new Link(container, SWT.NONE);
     90         mLink.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, true, 1, 1));
     91         mLink.setText(text);
     92         mLink.addSelectionListener(this);
     93 
     94         setMessage("Non-Constant Expressions: Migration Necessary", IMessageProvider.INFORMATION);
     95 
     96         return area;
     97     }
     98 
     99     @Override
    100     protected void createButtonsForButtonBar(Composite parent) {
    101         createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
    102         createButton(parent, IDialogConstants.HELP_ID, IDialogConstants.HELP_LABEL, false);
    103     }
    104 
    105     @Override
    106     protected Point getInitialSize() {
    107         return new Point(500, 400);
    108     }
    109 
    110     private void showWebPage() {
    111         try {
    112             IWorkbench workbench = PlatformUI.getWorkbench();
    113             IWebBrowser browser = workbench.getBrowserSupport().getExternalBrowser();
    114             browser.openURL(new URL(URL));
    115         } catch (Exception e) {
    116             String message = String.format("Could not open browser. Vist\n%1$s\ninstead.",
    117                     URL);
    118             MessageDialog.openError(getShell(), "Browser Error", message);
    119         }
    120 
    121     }
    122 
    123     @Override
    124     protected void buttonPressed(int buttonId) {
    125         if (buttonId == IDialogConstants.HELP_ID) {
    126             showWebPage();
    127         } else {
    128             super.buttonPressed(buttonId);
    129         }
    130     }
    131 
    132     // ---- Implements SelectionListener ----
    133 
    134     @Override
    135     public void widgetSelected(SelectionEvent e) {
    136         if (e.getSource() == mLink) {
    137             showWebPage();
    138         }
    139     }
    140 
    141     @Override
    142     public void widgetDefaultSelected(SelectionEvent e) {
    143     }
    144 }
    145