com.google.gapid.widgets.TextViewer.java Source code

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Here is the source code for com.google.gapid.widgets.TextViewer.java

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/*
 * Copyright (C) 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.gapid.widgets;

import com.google.common.util.concurrent.ListenableFuture;
import com.google.gapid.rpc.Rpc;
import com.google.gapid.rpc.RpcException;
import com.google.gapid.rpc.UiErrorCallback;
import com.google.gapid.util.Loadable.MessageType;
import com.google.gapid.util.Messages;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import java.util.concurrent.ExecutionException;
import java.util.logging.Logger;

/**
 * Popup displaying text to the user.
 */
public class TextViewer {
    private static final int INITIAL_MIN_HEIGHT = 600;
    protected static final Logger LOG = Logger.getLogger(TextViewer.class.getName());

    private TextViewer() {
    }

    public static void showViewTextPopup(Shell shell, Widgets widgets, String title,
            ListenableFuture<String> text) {
        new MessageDialog(shell, Messages.VIEW_DETAILS, null, title, MessageDialog.INFORMATION, 0,
                IDialogConstants.OK_LABEL) {
            protected LoadablePanel<Text> loadable;

            @Override
            protected boolean isResizable() {
                return true;
            }

            @Override
            protected Control createCustomArea(Composite parent) {
                loadable = new LoadablePanel<Text>(parent, widgets, panel -> new Text(panel,
                        SWT.MULTI | SWT.READ_ONLY | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL));
                loadable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

                loadable.startLoading();
                Rpc.listen(text, new UiErrorCallback<String, String, String>(parent, LOG) {
                    @Override
                    protected ResultOrError<String, String> onRpcThread(Rpc.Result<String> result) {
                        try {
                            return success(result.get());
                        } catch (RpcException e) {
                            return error(e.getMessage());
                        } catch (ExecutionException e) {
                            return error(e.getCause().toString());
                        }
                    }

                    @Override
                    protected void onUiThreadSuccess(String result) {
                        loadable.getContents().setText(result);
                        loadable.stopLoading();
                    }

                    @Override
                    protected void onUiThreadError(String error) {
                        loadable.showMessage(MessageType.Error, error);
                    }
                });
                return loadable;
            }

            @Override
            protected Point getInitialSize() {
                Point size = super.getInitialSize();
                size.y = Math.max(size.y, INITIAL_MIN_HEIGHT);
                return size;
            }
        }.open();
    }
}