Merge pull request #10 from skyrylyuk/master

Add Setting description and screenshots. Implement refresh project tree after save Settings

README.md

@@ -59,6 +59,21 @@ Usage
 1. Rick click on layout folder (or any other)
 2. In context menu click Group/Ungroup
 
+Settings
+
+Plugin setting can be found by path 'Settings'('Preferences' on Mac Os) -> 'Other Settings' -> 'Folding Plugin'  
+
+![](screenshots/Settings.png)
+
+By default, grouping happens by part of filename which situated before first symbol underscore(_). Also, this part 
+of filename is not hide. Patter for grouping setup as regular expression and can be change 'Setting' -> 'Other Setting' 
+-> 'Android Folding' -> 'Use custom pattern'. 'Hide Folding Prefix' take potability hide part of filename with 
+complete with pattern.
+
+| Default       | Folding default  | Folding with hide prefix |
+| ------------- |:----------------:| :-----------------------:|
+| ![](screenshots/Project_Tree_Default.png) | ![](screenshots/Project_Tree_Folding.png) | ![](screenshots/Project_Tree_Hide_Prefix.png) |
+
 ## Limitations
 
 The Android project view defines its own structure and does not allow modifying the structure through any extensions. Make sure your are in Project structure view, NOT Android.

src/com/dd/DirectoryNode.java

@@ -15,13 +15,13 @@
 import java.util.ArrayList;
 import java.util.List;
 
-public class DirectoryNode extends ProjectViewNode<String> {
+public class DirectoryNode extends ProjectViewNode<PsiFile> {
 
     private final String mName;
     private List<AbstractTreeNode> mChildNodeList;
 
-    protected DirectoryNode(Project project, ViewSettings viewSettings, String name) {
-        super(project, name, viewSettings);
+    protected DirectoryNode(Project project, ViewSettings viewSettings, PsiFile directory, String name) {
+        super(project, directory, viewSettings);
         mName = name;
         mChildNodeList = new ArrayList<AbstractTreeNode>();
     }

src/com/dd/ProjectStructureProvider.java

@@ -83,14 +83,16 @@ private List<AbstractTreeNode> createComposedFiles(@NotNull Collection<AbstractT
             }
 
             for (String composedDirName : composedDirNameSet) {
-                DirectoryNode composedDirNode = new DirectoryNode(project, viewSettings, composedDirName);
                 List<AbstractTreeNode> composedFileNodes = filterByDirName(fileNodes, composedDirName);
+                PsiFile psiFile = (PsiFile) composedFileNodes.get(0).getValue();
+                DirectoryNode composedDirNode = new DirectoryNode(project, viewSettings, psiFile, composedDirName);
                 composedDirNode.addAllChildren(composedFileNodes);
                 resultList.add(composedDirNode);
             }
 
             if (!notComposedFileNodes.isEmpty()) {
-                DirectoryNode composedDirNode = new DirectoryNode(project, viewSettings, OTHER_NODE);
+                PsiFile psiFile = (PsiFile) notComposedFileNodes.get(0).getValue();
+                DirectoryNode composedDirNode = new DirectoryNode(project, viewSettings, psiFile, OTHER_NODE);
                 composedDirNode.addAllChildren(notComposedFileNodes);
                 resultList.add(composedDirNode);
             }

src/com/dd/SettingConfigurable.java

@@ -1,8 +1,10 @@
 package com.dd;
 
+import com.intellij.ide.projectView.ProjectView;
 import com.intellij.ide.util.PropertiesComponent;
 import com.intellij.openapi.options.Configurable;
 import com.intellij.openapi.options.ConfigurationException;
+import com.intellij.openapi.project.Project;
 import org.jetbrains.annotations.Nls;
 import org.jetbrains.annotations.Nullable;
 
@@ -13,6 +15,7 @@
 import java.awt.event.ActionListener;
 
 /**
+ *
  * Created by skyrylyuk on 10/15/15.
  */
 public class SettingConfigurable implements Configurable {
@@ -100,6 +103,14 @@ public void apply() throws ConfigurationException {
         PropertiesComponent.getInstance().setValue(PREFIX_PATTERN, customPattern.getText());
         PropertiesComponent.getInstance().setValue(PREFIX_HIDE, Boolean.valueOf(hideFoldingPrefix.isSelected()).toString());
 
+        if (isModified) {
+            Project currentProject = Utils.getCurrentProject();
+
+            if (currentProject != null) {
+                ProjectView.getInstance(currentProject).refresh();
+            }
+        }
+
         isModified = false;
     }