Add support for GWT Super Dev Mode (#1132)

README.md

@@ -151,5 +151,20 @@ The automated tests depend on [Phantomjs](http://phantomjs.org/). Make sure you
 
     $ ant tests
     
+### Hot-reloading GWT code with 'Super Dev Mode'
+1. Run `ant devmode`
+2. [Run the main server](#running-the-main-server).
+3. Open http://localhost:9876 (*GWT CodeServer*) and drag the two bookmarklets (*Dev Mode On & Off*) to the bookmarks bar.
+4. Open http://localhost:8888 (*App Engine server*)
+5. To see changes "live":
+   1. Save your changes in file.
+   2. Click on the *"Dev Mode On"* bookmarklet.
+   3. A popup will be shown with a button to compile `ode` module.
+   4. Press that button to compile. (That button is actually a bookmarklet. So you can drag this button to the bookmarks bar as well. This will come handy for subsequent compilations)
+   5. After that, *GWT CodeServer* will compile the module incrementally.
+   6. Refresh the page and that's it! The changes are live.
+
+Logs can be found at http://localhost:9876/log/ode and SourceMaps at http://localhost:9876/sourcemaps/ode
+
 ## Need help?
 Join [our community](https://community.appinventor.mit.edu/).

appinventor/appengine/build.xml

@@ -579,6 +579,41 @@
     </java>
   </target>
 
+  <target name="devmode"
+          depends="common_CommonUtils,common_CommonVersion,components_CommonConstants,AiClientLib,AiRebindLib,CheckYaClientApp"
+          description="Run development mode">
+    <java failonerror="true" fork="true" classname="com.google.gwt.dev.codeserver.CodeServer">
+      <classpath>
+        <pathelement location="src" />
+        <pathelement location="${build.dir}/components/ComponentTranslation/src" />
+        <pathelement location="${build.war.dir}/WEB-INF/classes" />
+        <pathelement location="${local.build.dir}/AiRebindLib.jar" />
+        <pathelement location="${build.dir}/common/BlocksEditorHttpConstants-gwt.jar" />
+        <pathelement location="${build.dir}/common/CommonUtils-gwt.jar" />
+        <pathelement location="${build.dir}/common/CommonVersion-gwt.jar" />
+        <pathelement location="${build.dir}/components/CommonConstants-gwt.jar" />
+        <!-- external libs -->
+        <pathelement location="${lib.dir}/findbugs/jsr305.jar" />
+        <pathelement location="${lib.dir}/guava/guava-20.0.jar" />
+        <pathelement location="${lib.dir}/guava/guava-gwt-20.0.jar" />
+        <pathelement location="${lib.dir}/guava/error_prone_annotations-2.0.12.jar" />
+        <pathelement location="${lib.dir}/guava/j2objc-annotations-1.1.jar" />
+        <pathelement location="${lib.dir}/gwt_dragdrop/gwt-dnd-3.2.3.jar" />
+        <pathelement location="${lib.dir}/gwt_incubator/gwt-incubator-20101117-r1766.jar" />
+        <pathelement location="${lib.dir}/gwt_query/gwtquery-1.5-beta1.jar" />
+        <!-- gwt libs -->
+        <pathelement location="${gwt.sdk}/gwt-codeserver.jar" />
+        <pathelement location="${gwt.sdk}/gwt-dev.jar" />
+        <pathelement location="${gwt.sdk}/gwt-user.jar" />
+        <pathelement location="${gwt.sdk}/validation-api-1.0.0.GA.jar" />
+        <pathelement location="${gwt.sdk}/validation-api-1.0.0.GA-sources.jar" />
+      </classpath>
+      <jvmarg value="-Xmx1G" />
+      <arg line="-style PRETTY -logLevel INFO" />
+      <arg value="com.google.appinventor.YaClient" />
+    </java>
+  </target>
+
   <!-- =====================================================================
        AiClientLibTests: build and run the AiClientLib tests and generate the output results
        ===================================================================== -->

appinventor/appengine/src/com/google/appinventor/client/editor/simple/components/MockComponentsUtil.java

@@ -283,7 +283,7 @@ public final class MockComponentsUtil {
     Element element = w.getElement();
     String widthStyle = DOM.getStyleAttribute(element, "width");
     String heightStyle = DOM.getStyleAttribute(element, "height");
-    String lineHeightStyle = DOM.getStyleAttribute(element, "line-height");
+    String lineHeightStyle = DOM.getStyleAttribute(element, "lineHeight");
     if (widthStyle != null) {
       DOM.setStyleAttribute(element, "width", null);
     }
@@ -291,7 +291,7 @@ public final class MockComponentsUtil {
       DOM.setStyleAttribute(element, "height", null);
     }
     if (lineHeightStyle != null) {
-      DOM.setStyleAttribute(element, "line-height", "initial");
+      DOM.setStyleAttribute(element, "lineHeight", "initial");
     }
     return new String[] { widthStyle, heightStyle, lineHeightStyle };
   }
@@ -312,7 +312,7 @@ public final class MockComponentsUtil {
       DOM.setStyleAttribute(element, "height", style[1]);
     }
     if (style[2] != null) {
-      DOM.setStyleAttribute(element, "line-height", style[2]);
+      DOM.setStyleAttribute(element, "lineHeight", style[2]);
     }
   }
 

appinventor/build.xml

@@ -71,6 +71,10 @@
     <ant inheritAll="false" useNativeBasedir="true" dir="aimerger" target="AIMergerApp"/>
   </target>
   
+  <target name="devmode" depends="noplay">
+    <ant inheritAll="false" useNativeBasedir="true" dir="appengine" target="devmode"/>
+  </target>
+
   <!-- Convenient target for just running the blockly related tests -->
   <target name="BlocklyTest">
     <ant inheritAll="false" useNativeBasedir="true" dir="blocklyeditor" target="tests"/>