Added examples-package as a new contribution type.

app/src/processing/app/Base.java

@@ -98,6 +98,7 @@ public class Base {
   ContributionManagerDialog libraryManagerFrame;
   ContributionManagerDialog toolManagerFrame;
   ContributionManagerDialog modeManagerFrame;
+  ContributionManagerDialog exampleManagerFrame;
   ContributionManagerDialog updateManagerFrame;
 
   // set to true after the first time the menu is built.
@@ -123,6 +124,8 @@ public class Base {
   private Mode[] coreModes;
   //public List<ModeContribution> contribModes;
   protected ArrayList<ModeContribution> modeContribs;
+
+  protected ArrayList<ExamplesPackageContribution> exampleContribs;
 
   private JMenu sketchbookMenu;
 
@@ -339,6 +342,19 @@ void rebuildContribModes() {
   }
 
 
+  /**
+   * Instantiates and adds new contributed modes to the contribModes list.
+   * Checks for duplicates so the same mode isn't instantiates twice. Does not
+   * remove modes because modes can't be removed once they are instantiated.
+   */
+  void rebuildContribExamples() {
+    if (exampleContribs == null) {
+      exampleContribs = new ArrayList<ExamplesPackageContribution>();
+    }
+    ExamplesPackageContribution.loadMissing(this);
+  }
+
+
   public Base(String[] args) throws Exception {
 //    // Get the sketchbook path, and make sure it's set properly
 //    determineSketchbookFolder();
@@ -356,6 +372,8 @@ public Base(String[] args) throws Exception {
     ContributionManager.cleanup(this);
     buildCoreModes();
     rebuildContribModes();
+
+    rebuildContribExamples();
 
     // Needs to happen after the sketchbook folder has been located.
     // Also relies on the modes to be loaded so it knows what can be
@@ -385,6 +403,8 @@ public Base(String[] args) throws Exception {
       new ContributionManagerDialog(ContributionType.TOOL);
     modeManagerFrame =
       new ContributionManagerDialog(ContributionType.MODE);
+    exampleManagerFrame =
+      new ContributionManagerDialog(ContributionType.EXAMPLES_PACKAGE);
     updateManagerFrame =
       new ContributionManagerDialog(null);
 
@@ -658,6 +678,11 @@ public ArrayList<Mode> getModeList() {
   }
 
 
+  public ArrayList<ExamplesPackageContribution> getExampleContribs() {
+    return exampleContribs;
+  }
+
+
   // Because of variations in native windowing systems, no guarantees about
   // changes to the focused and active Windows can be made. Developers must
   // never assume that this Window is the focused or active Window until this
@@ -1483,7 +1508,7 @@ public void actionPerformed(ActionEvent e) {
           JMenu submenu = new JMenu(name);
           // needs to be separate var otherwise would set ifound to false
           boolean anything = addSketches(submenu, subfolder, replaceExisting);
-          if (anything) {
+          if (anything && !name.equals("old")) { //Don't add old contributions
             menu.add(submenu);
             found = true;
           }
@@ -1651,6 +1676,14 @@ public void handleOpenModeManager() {
   }
 
 
+  /**
+   * Show the examples installer window.
+   */
+  public void handleOpenExampleManager() {
+    exampleManagerFrame.showFrame(activeEditor);
+  }
+
+
   public void handleShowUpdates() {
     updateManagerFrame.showFrame(activeEditor);
   }
@@ -1923,6 +1956,7 @@ static public void locateSketchbookFolder() {
     getSketchbookLibrariesFolder().mkdir();
     getSketchbookToolsFolder().mkdir();
     getSketchbookModesFolder().mkdir();
+    getSketchbookExamplesPackagesFolder().mkdir();
 //    System.err.println("sketchbook: " + sketchbookFolder);
   }
 
@@ -1954,6 +1988,11 @@ static public File getSketchbookModesFolder() {
   }
 
 
+  static public File getSketchbookExamplesPackagesFolder() {
+    return new File(sketchbookFolder, "examples-packages");
+  }
+
+
   static protected File getDefaultSketchbookFolder() {
     File sketchbookFolder = null;
     try {