Java tutorial
// -*- mode: java; c-basic-offset: 2; -*- // Copyright 2009-2011 Google, All Rights reserved // Copyright 2011-2012 MIT, All rights reserved // Released under the Apache License, Version 2.0 // http://www.apache.org/licenses/LICENSE-2.0 package com.google.appinventor.client.explorer.commands; import com.google.appinventor.client.ErrorReporter; import com.google.appinventor.client.Ode; import com.google.appinventor.client.OdeAsyncCallback; import com.google.appinventor.client.boxes.ViewerBox; import com.google.appinventor.client.editor.ProjectEditor; import com.google.appinventor.client.output.MessagesOutput; import com.google.appinventor.client.tracking.Tracking; import com.google.appinventor.shared.rpc.RpcResult; import com.google.appinventor.shared.rpc.project.ProjectNode; import com.google.appinventor.shared.rpc.project.youngandroid.YoungAndroidBlocksNode; import com.google.appinventor.shared.rpc.project.youngandroid.YoungAndroidProjectNode; import com.google.appinventor.shared.youngandroid.YoungAndroidSourceAnalyzer; import com.google.gwt.i18n.client.DateTimeFormat; import com.google.gwt.json.client.JSONObject; import com.google.gwt.json.client.JSONParser; import com.google.gwt.json.client.JSONString; import com.google.gwt.json.client.JSONValue; import com.google.gwt.user.client.Timer; import java.util.Date; import static com.google.appinventor.client.Ode.MESSAGES; /** * Command to wait for the result of a build * * @author markf@google.com (Mark Friedman) */ public class WaitForBuildResultCommand extends ChainableCommand { // The build target private final String target; private static final int WAIT_INTERVAL_MILLIS = 10000; private final MessagesOutput messagesOutput; private final String buildRequestTime; /** * Creates a new WaitForBuildResultCommand. * * @param target the build target */ public WaitForBuildResultCommand(String target) { this(target, null); } /** * Creates a new WaitForBuildResultCommand, with additional behavior provided by * another ChainableCommand. * * @param target the build target * @param nextCommand the command to execute after the build has finished */ public WaitForBuildResultCommand(String target, ChainableCommand nextCommand) { super(nextCommand); this.target = target; messagesOutput = MessagesOutput.getMessagesOutput(); buildRequestTime = DateTimeFormat.getMediumDateTimeFormat().format(new Date()); } @Override public boolean willCallExecuteNextCommand() { return true; } // TODO(sharon): what happens if the user has already switched projects? Do // we still switch back to the project to display build errors? @Override public void execute(final ProjectNode node) { final Ode ode = Ode.getInstance(); messagesOutput.clear(); messagesOutput.addMessages(MESSAGES.buildRequestedMessage(node.getName(), buildRequestTime)); OdeAsyncCallback<RpcResult> callback = new OdeAsyncCallback<RpcResult>( // failure message MESSAGES.buildError()) { @Override public void onSuccess(RpcResult result) { messagesOutput.addMessages("Waiting for " + getElapsedMillis() / 1000 + " seconds."); messagesOutput.addMessages(result.getOutput()); messagesOutput.addMessages(result.getError()); Tracking.trackEvent(Tracking.PROJECT_EVENT, Tracking.PROJECT_SUBACTION_BUILD_YA, node.getName(), getElapsedMillis()); if (result.succeeded()) { ode.getTopToolbar().updateKeystoreFileMenuButtons(); executeNextCommand(node); } else if (result.getResult() == 1) { // General build error String errorMsg = result.getError(); // This is not an internal App Inventor bug. The error should be // reported in a yellow info box. ErrorReporter .reportInfo(MESSAGES.buildFailedError() + (errorMsg.isEmpty() ? "" : " " + errorMsg)); executionFailedOrCanceled(); } else if (result.getResult() == 2) { // Yail generation error String formName = extractFormName(result); ErrorReporter.reportError(MESSAGES.errorGeneratingYail(formName)); String blocksFileName = formName + YoungAndroidSourceAnalyzer.CODEBLOCKS_SOURCE_EXTENSION; YoungAndroidBlocksNode blocksNode = findBlocksNode((YoungAndroidProjectNode) node, blocksFileName); if (blocksNode != null) { showProblemBlocks(blocksNode); } executionFailedOrCanceled(); } else { // Build isn't done yet Timer timer = new Timer() { @Override public void run() { execute(node); } }; // TODO(user): Maybe do an exponential backoff here. timer.schedule(WAIT_INTERVAL_MILLIS); } } @Override public void onFailure(Throwable caught) { super.onFailure(caught); executionFailedOrCanceled(); } }; ode.getProjectService().getBuildResult(node.getProjectId(), target, callback); } private static YoungAndroidBlocksNode findBlocksNode(YoungAndroidProjectNode projectRootNode, String formName) { // Iterate over the YoungAndroidBlocksNodes in this project. for (ProjectNode source : projectRootNode.getAllSourceNodes()) { if (source instanceof YoungAndroidBlocksNode) { YoungAndroidBlocksNode blocksNode = (YoungAndroidBlocksNode) source; if (formName.equals(blocksNode.getFormName())) { return blocksNode; } } } return null; } private static String extractFormName(RpcResult result) { String extraString = result.getExtra(); if (extraString != null) { JSONValue extraJSONValue = JSONParser.parseStrict(extraString); JSONObject extraJSONObject = extraJSONValue.isObject(); if (extraJSONObject != null) { JSONValue formNameJSONValue = extraJSONObject.get("formName"); if (formNameJSONValue != null) { JSONString formNameJSONString = formNameJSONValue.isString(); if (formNameJSONString != null) { return formNameJSONString.stringValue(); } } } } return "Screen1"; } /** * Shows the given blocks file in the blocks editor so the user can take * care of any problems. */ private static void showProblemBlocks(final YoungAndroidBlocksNode blocksNode) { ProjectEditor projectEditor = ViewerBox.getViewerBox().show(blocksNode.getProjectRoot()); // TODO(sharon): cause the blocks editor to highlight the problem blocks= } }