Added abstract adapter class and implemented a simple adapter using it.

library/src/main/java/com/psaravan/filebrowserview/lib/ListLayout/ListLayoutAdapter.java

@@ -19,21 +19,23 @@
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.ArrayAdapter;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;
 
 import com.psaravan.filebrowserview.lib.FileBrowserEngine.AdapterData;
+import com.psaravan.filebrowserview.lib.FileBrowserEngine.FileBrowserEngine;
 import com.psaravan.filebrowserview.lib.R;
+import com.psaravan.filebrowserview.lib.Utils.Utils;
+import com.psaravan.filebrowserview.lib.View.AbstractAdapter;
 
 /**
  * Adapter for the ListView layout.
  *
  * @author Saravan Pantham
  */
-public class ListLayoutAdapter extends ArrayAdapter<String> {
+public class ListLayoutAdapter extends AbstractAdapter {
 
     //Context.
     private Context mContext;
@@ -42,7 +44,7 @@ public class ListLayoutAdapter extends ArrayAdapter<String> {
     private AdapterData mAdapterData;
 
     public ListLayoutAdapter(Context context, int resource, AdapterData adapterData) {
-        super(context, resource);
+        super(context, resource, adapterData);
         mContext = context;
         mAdapterData = adapterData;
     }
@@ -55,7 +57,7 @@ public View getView(int position, View convertView, ViewGroup parent) {
 
             convertView = LayoutInflater.from(mContext).inflate(R.layout.list_view_item, parent, false);
             ListView.LayoutParams params = (ListView.LayoutParams) convertView.getLayoutParams();
-            params.height = (int) mApp.convertDpToPixels(72.0f, mContext);
+            params.height = (int) Utils.convertDpToPixels(72.0f, mContext);
             convertView.setLayoutParams(params);
 
             holder = new FoldersViewHolder();
@@ -64,18 +66,9 @@ public View getView(int position, View convertView, ViewGroup parent) {
             holder.fileFolderNameText = (TextView) convertView.findViewById(R.id.listViewTitleText);
             holder.overflowButton = (ImageButton) convertView.findViewById(R.id.listViewOverflow);
             holder.rightSubText = (TextView) convertView.findViewById(R.id.listViewRightSubText);
-
-            holder.fileFolderIcon.setScaleX(0.5f);
-            holder.fileFolderIcon.setScaleY(0.55f);
             holder.rightSubText.setVisibility(View.INVISIBLE);
 
-            holder.fileFolderNameText.setTextColor(UIElementsHelper.getThemeBasedTextColor(mContext));
-            holder.fileFolderNameText.setTypeface(TypefaceHelper.getTypeface(mContext, "Roboto-Regular"));
-
-            holder.fileFolderSizeText.setTextColor(UIElementsHelper.getSmallTextColor(mContext));
-            holder.fileFolderSizeText.setTypeface(TypefaceHelper.getTypeface(mContext, "Roboto-Regular"));
-
-            holder.overflowButton.setImageResource(UIElementsHelper.getIcon(mContext, "ic_action_overflow"));
+            holder.overflowButton.setImageResource(R.drawable.ic_action_overflow_universal);
             holder.overflowButton.setFocusable(false);
             holder.overflowButton.setFocusableInTouchMode(false);
             holder.overflowButton.setOnClickListener(overflowClickListener);
@@ -85,45 +78,54 @@ public View getView(int position, View convertView, ViewGroup parent) {
             holder = (FoldersViewHolder) convertView.getTag();
         }
 
-        holder.fileFolderNameText.setText(mFileFolderNameList.get(position));
-        holder.fileFolderSizeText.setText(mFileFolderSizeList.get(position));
+        holder.fileFolderNameText.setText(getNamesList().get(position));
+        holder.fileFolderSizeText.setText(getSizesList().get(position));
 
         //Set the icon based on whether the item is a folder or a file.
-        if (mFileFolderTypeList.get(position)==FilesFoldersFragment.FOLDER) {
+        if (getTypesList().get(position)== FileBrowserEngine.FOLDER) {
             holder.fileFolderIcon.setImageResource(R.drawable.icon_folderblue);
-            convertView.setTag(R.string.folder_list_item_type, FilesFoldersFragment.FOLDER);
-            convertView.setTag(R.string.folder_path, mFileFolderPathsList.get(position));
+            convertView.setTag(R.string.type, FileBrowserEngine.FOLDER);
+            convertView.setTag(R.string.path, getPathsList().get(position));
             convertView.setTag(R.string.position, position);
 
-        } else if (mFileFolderTypeList.get(position)==FilesFoldersFragment.AUDIO_FILE) {
+        } else if (getTypesList().get(position)==FileBrowserEngine.FILE_AUDIO) {
             holder.fileFolderIcon.setImageResource(R.drawable.icon_mp3);
-            convertView.setTag(R.string.folder_list_item_type, FilesFoldersFragment.AUDIO_FILE);
-            convertView.setTag(R.string.folder_path, mFileFolderPathsList.get(position));
+            convertView.setTag(R.string.type, FileBrowserEngine.FILE_AUDIO);
+            convertView.setTag(R.string.path, getPathsList().get(position));
             convertView.setTag(R.string.position, position);
 
-        } else if (mFileFolderTypeList.get(position)==FilesFoldersFragment.PICTURE_FILE) {
+        } else if (getTypesList().get(position)==FileBrowserEngine.FILE_PICTURE) {
             holder.fileFolderIcon.setImageResource(R.drawable.icon_png);
-            convertView.setTag(R.string.folder_list_item_type, FilesFoldersFragment.PICTURE_FILE);
-            convertView.setTag(R.string.folder_path, mFileFolderPathsList.get(position));
+            convertView.setTag(R.string.type, FileBrowserEngine.FILE_PICTURE);
+            convertView.setTag(R.string.path, getPathsList().get(position));
             convertView.setTag(R.string.position, position);
 
-        } else if (mFileFolderTypeList.get(position)==FilesFoldersFragment.VIDEO_FILE) {
+        } else if (getTypesList().get(position)==FileBrowserEngine.FILE_VIDEO) {
             holder.fileFolderIcon.setImageResource(R.drawable.icon_avi);
-            convertView.setTag(R.string.folder_list_item_type, FilesFoldersFragment.VIDEO_FILE);
-            convertView.setTag(R.string.folder_path, mFileFolderPathsList.get(position));
+            convertView.setTag(R.string.type, FileBrowserEngine.FILE_VIDEO);
+            convertView.setTag(R.string.path, getPathsList().get(position));
             convertView.setTag(R.string.position, position);
 
         } else {
             holder.fileFolderIcon.setImageResource(R.drawable.icon_default);
-            convertView.setTag(R.string.folder_list_item_type, FilesFoldersFragment.FILE);
-            convertView.setTag(R.string.folder_path, mFileFolderPathsList.get(position));
+            convertView.setTag(R.string.type, FileBrowserEngine.FILE_GENERIC);
+            convertView.setTag(R.string.path, getPathsList().get(position));
             convertView.setTag(R.string.position, position);
 
         }
 
         return convertView;
     }
 
+    private View.OnClickListener overflowClickListener = new View.OnClickListener() {
+
+        @Override
+        public void onClick(View view) {
+
+        }
+
+    };
+
     /**
      * Holder class for the ListView layout.
      */
@@ -133,6 +135,7 @@ static class FoldersViewHolder {
         public ImageView fileFolderIcon;
         public ImageButton overflowButton;
         public TextView rightSubText;
+
     }
 
 }

library/src/main/java/com/psaravan/filebrowserview/lib/Utils/Utils.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 Saravan Pantham
+ *
+ * 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.psaravan.filebrowserview.lib.Utils;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.util.DisplayMetrics;
+
+/**
+ * Helper class with a set of commonly used helper methods.
+ *
+ * @author Saravan Pantham
+ */
+public class Utils {
+
+    /**
+     * Converts the input dp unit to pixels, depending on device density.
+     *
+     * @param dp A value in dp (density independent pixels) unit. Which we need to convert into pixels
+     * @param context Context to get resources and device specific display metrics
+     * @return A floating point value to represent px equivalent to dp depending on device density.
+     */
+    public static float convertDpToPixels(float dp, Context context){
+        Resources resources = context.getResources();
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        float px = dp * (metrics.densityDpi / 160f);
+        return px;
+    }
+
+}

library/src/main/java/com/psaravan/filebrowserview/lib/View/AbstractAdapter.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2014 Saravan Pantham
+ *
+ * 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.psaravan.filebrowserview.lib.View;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+
+import com.psaravan.filebrowserview.lib.FileBrowserEngine.AdapterData;
+
+import java.util.ArrayList;
+
+/**
+ * Extend this abstract class if you want to create your own adapter for the ListView/GridView.
+ *
+ * @author Saravan Pantham
+ */
+public abstract class AbstractAdapter extends ArrayAdapter<String> {
+
+    private Context mContext;
+    private AdapterData mAdapterData;
+
+    public AbstractAdapter(Context context, int layoutResourceId, AdapterData adapterData) {
+        super(context, layoutResourceId);
+        mContext = context;
+        mAdapterData = adapterData;
+    }
+
+    /**
+     * Get a View that displays the data at the specified position in the data set. You can either
+     * create a View manually or inflate it from an XML layout file. When the View is inflated, the
+     * parent View (GridView, ListView...) will apply default layout parameters unless you use
+     * {@link android.view.LayoutInflater#inflate(int, android.view.ViewGroup, boolean)}
+     * to specify a root view and to prevent attachment to the root.
+     *
+     * @param position The position of the item within the adapter's data set of the item whose view
+     *        we want.
+     * @param convertView The old view to reuse, if possible. Note: You should check that this view
+     *        is non-null and of an appropriate type before using. If it is not possible to convert
+     *        this view to display the correct data, this method can create a new view.
+     *        Heterogeneous lists can specify their number of view types, so that this View is
+     *        always of the right type (see {@link #getViewTypeCount()} and
+     *        {@link #getItemViewType(int)}).
+     * @param parent The parent that this view will eventually be attached to
+     * @return A View corresponding to the data at the specified position.
+     */
+    @Override
+    public abstract View getView(int position, View convertView, ViewGroup parent);
+
+    /**
+     * @return The list of file/subfolder names within the current directory.
+     */
+    public ArrayList<String> getNamesList() {
+        if (mAdapterData!=null)
+            return mAdapterData.getNamesList();
+        else
+            return new ArrayList<String>();
+
+    }
+
+    /**
+     * @return The list of file/subfolder types within the current directory.
+     */
+    public ArrayList<Integer> getTypesList() {
+        if (mAdapterData!=null)
+            return mAdapterData.getTypesList();
+        else
+            return new ArrayList<Integer>();
+
+    }
+
+    /**
+     * @return The list of file/subfolder paths within the current directory.
+     */
+    public ArrayList<String> getPathsList() {
+        if (mAdapterData!=null)
+            return mAdapterData.getPathsList();
+        else
+            return new ArrayList<String>();
+
+    }
+
+    /**
+     * @return The list of file/subfolder sizes within the current directory.
+     */
+    public ArrayList<String> getSizesList() {
+        if (mAdapterData!=null)
+            return mAdapterData.getSizesList();
+        else
+            return new ArrayList<String>();
+
+    }
+
+}

library/src/main/res/drawable/empty_color_patch.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" >
+    <solid android:color="#11AAAAAA"/>
+</shape>

library/src/main/res/drawable/empty_color_patch_circular.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+
+    <solid
+        android:color="#11AAAAAA"/>
+
+    <size
+        android:width="80dp"
+        android:height="80dp"/>
+</shape>

library/src/main/res/drawable/empty_color_patch_circular_light.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+
+    <solid
+        android:color="#33323232"/>
+
+    <size
+        android:width="80dp"
+        android:height="80dp"/>
+</shape>

library/src/main/res/drawable/empty_color_patch_light.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" >
+    <solid android:color="#33323232"/>
+</shape>