move the SelectFolder dialog handling in a separate file

app/src/main/java/com/simplemobiletools/filemanager/dialogs/SelectFolderDialog.java

@@ -0,0 +1,136 @@
+package com.simplemobiletools.filemanager.dialogs;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.support.v7.app.AlertDialog;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ListView;
+
+import com.simplemobiletools.filemanager.Breadcrumbs;
+import com.simplemobiletools.filemanager.R;
+import com.simplemobiletools.filemanager.Utils;
+import com.simplemobiletools.filemanager.adapters.ItemsAdapter;
+import com.simplemobiletools.filemanager.fragments.ItemsFragment;
+import com.simplemobiletools.filemanager.models.FileDirItem;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class SelectFolderDialog extends DialogFragment {
+    private static String mPath;
+    private static ListView mListView;
+    private static Breadcrumbs mBreadcrumbs;
+
+    public static SelectFolderDialog newInstance(String path) {
+        mPath = path;
+        return new SelectFolderDialog();
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final View view = getActivity().getLayoutInflater().inflate(R.layout.directory_picker, null);
+        mListView = (ListView) view.findViewById(R.id.directory_picker_list);
+        mBreadcrumbs = (Breadcrumbs) view.findViewById(R.id.directory_picker_breadcrumbs);
+
+        updateItems();
+        setupBreadcrumbs();
+
+        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+        builder.setTitle(getResources().getString(R.string.select_destination));
+        builder.setView(view);
+        builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                sendResult();
+            }
+        });
+        builder.setNegativeButton(R.string.cancel, null);
+
+        return builder.create();
+    }
+
+    private void updateItems() {
+        final List<FileDirItem> items = getItems(mPath);
+        if (!containsDirectory(items)) {
+            sendResult();
+            return;
+        }
+
+        Collections.sort(items);
+        final ItemsAdapter adapter = new ItemsAdapter(getContext(), items);
+        mListView.setAdapter(adapter);
+
+        mBreadcrumbs.setInitialBreadcrumb(mPath);
+        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                final FileDirItem item = items.get(position);
+                if (item.getIsDirectory()) {
+                    mPath = item.getPath();
+                    updateItems();
+                }
+            }
+        });
+    }
+
+    private void sendResult() {
+        Intent intent = new Intent();
+        intent.putExtra(ItemsFragment.SELECT_FOLDER_PATH, mPath);
+        getTargetFragment().onActivityResult(ItemsFragment.SELECT_FOLDER_REQUEST, Activity.RESULT_OK, intent);
+        dismiss();
+    }
+
+    private void setupBreadcrumbs() {
+        mBreadcrumbs.setListener(new Breadcrumbs.BreadcrumbsListener() {
+            @Override
+            public void breadcrumbClicked(int id) {
+                final FileDirItem item = (FileDirItem) mBreadcrumbs.getChildAt(id).getTag();
+                mPath = item.getPath();
+                updateItems();
+            }
+        });
+    }
+
+    private List<FileDirItem> getItems(String path) {
+        final List<FileDirItem> items = new ArrayList<>();
+        final File base = new File(path);
+        File[] files = base.listFiles();
+        if (files != null) {
+            for (File file : files) {
+                if (!file.isDirectory())
+                    continue;
+
+                final String curPath = file.getAbsolutePath();
+                final String curName = Utils.getFilename(curPath);
+                int children = getChildren(file);
+                long size = file.length();
+
+                items.add(new FileDirItem(curPath, curName, file.isDirectory(), children, size));
+            }
+        }
+        return items;
+    }
+
+    private int getChildren(File file) {
+        if (file.listFiles() == null || !file.isDirectory())
+            return 0;
+
+        return file.listFiles().length;
+    }
+
+    private boolean containsDirectory(List<FileDirItem> items) {
+        for (FileDirItem item : items) {
+            if (item.getIsDirectory()) {
+                return true;
+            }
+        }
+        return false;
+    }
+}

app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java

@@ -1,5 +1,6 @@
 package com.simplemobiletools.filemanager.fragments;
 
+import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -29,13 +30,13 @@ import android.widget.ListView;
 import android.widget.RadioGroup;
 import android.widget.TextView;
 
-import com.simplemobiletools.filemanager.Breadcrumbs;
 import com.simplemobiletools.filemanager.Config;
 import com.simplemobiletools.filemanager.Constants;
 import com.simplemobiletools.filemanager.R;
 import com.simplemobiletools.filemanager.Utils;
 import com.simplemobiletools.filemanager.adapters.ItemsAdapter;
 import com.simplemobiletools.filemanager.asynctasks.CopyTask;
+import com.simplemobiletools.filemanager.dialogs.SelectFolderDialog;
 import com.simplemobiletools.filemanager.models.FileDirItem;
 
 import java.io.File;
@@ -56,6 +57,9 @@ public class ItemsFragment extends android.support.v4.app.Fragment
     @BindView(R.id.items_swipe_refresh) SwipeRefreshLayout mSwipeRefreshLayout;
     @BindView(R.id.items_holder) CoordinatorLayout mCoordinatorLayout;
 
+    public static final int SELECT_FOLDER_REQUEST = 1;
+    public static final String SELECT_FOLDER_PATH = "path";
+
     private List<FileDirItem> mItems;
     private ItemInteractionListener mListener;
     private List<String> mToBeDeleted;
@@ -63,6 +67,7 @@ public class ItemsFragment extends android.support.v4.app.Fragment
     private String mCopyDestinationPath;
     private Snackbar mSnackbar;
     private AlertDialog mCopyDialog;
+    private TextView mDestinationView;
 
     private boolean mShowHidden;
     private int mSelectedItemsCnt;
@@ -417,8 +422,8 @@ public class ItemsFragment extends android.support.v4.app.Fragment
         final TextView source = (TextView) copyView.findViewById(R.id.source);
         source.setText(mPath + "/");
 
-        final TextView destination = (TextView) copyView.findViewById(R.id.destination);
+        mDestinationView = (TextView) copyView.findViewById(R.id.destination);
-        destination.setOnClickListener(destinationPicker);
+        mDestinationView.setOnClickListener(destinationPicker);
 
         final int copyString = (itemIndexes.size() == 1) ? R.string.copy_item : R.string.copy_items;
         final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
@@ -432,7 +437,7 @@ public class ItemsFragment extends android.support.v4.app.Fragment
         mCopyDialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                final String destinationPath = destination.getText().toString().trim();
+                final String destinationPath = mDestinationView.getText().toString().trim();
                 if (destinationPath.equals(getResources().getString(R.string.select_destination))) {
                     Utils.showToast(getContext(), R.string.please_select_destination);
                     return;
@@ -515,82 +520,19 @@ public class ItemsFragment extends android.support.v4.app.Fragment
 
     private View.OnClickListener destinationPicker = new View.OnClickListener() {
         @Override
-        public void onClick(final View destinationView) {
+        public void onClick(final View view) {
-            final View pickerView = getActivity().getLayoutInflater().inflate(R.layout.directory_picker, null);
+            SelectFolderDialog dialog = SelectFolderDialog.newInstance(mCopyDestinationPath);
-            final ListView pickerList = (ListView) pickerView.findViewById(R.id.directory_picker_list);
+            dialog.setTargetFragment(ItemsFragment.this, SELECT_FOLDER_REQUEST);
-            final List<FileDirItem> items = getItems(mCopyDestinationPath);
+            dialog.show(getFragmentManager(), "selectFolder");
-            Collections.sort(items);
-            final ItemsAdapter adapter = new ItemsAdapter(getContext(), items);
-            pickerList.setAdapter(adapter);
-
-            final Breadcrumbs breadcrumbs = (Breadcrumbs) pickerView.findViewById(R.id.directory_picker_breadcrumbs);
-            breadcrumbs.setInitialBreadcrumb(mCopyDestinationPath);
-            breadcrumbs.setListener(new Breadcrumbs.BreadcrumbsListener() {
-                @Override
-                public void breadcrumbClicked(int id) {
-                    final FileDirItem item = (FileDirItem) breadcrumbs.getChildAt(id).getTag();
-                    mCopyDestinationPath = item.getPath();
-                    breadcrumbs.setInitialBreadcrumb(mCopyDestinationPath);
-                    final List<FileDirItem> newItems = getItems(mCopyDestinationPath);
-                    Collections.sort(newItems);
-                    adapter.updateItems(newItems);
-                }
-            });
-
-            final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
-            builder.setTitle(getResources().getString(R.string.select_destination));
-            builder.setView(pickerView);
-            builder.setPositiveButton(R.string.ok, null);
-            builder.setNegativeButton(R.string.cancel, null);
-
-            final AlertDialog alertDialog = builder.create();
-            alertDialog.show();
-            alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    alertDialog.dismiss();
-                    ((TextView) destinationView).setText(mCopyDestinationPath);
-                }
-            });
-
-            alertDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
-                @Override
-                public void onDismiss(DialogInterface dialog) {
-                    final String destText = ((TextView) destinationView).getText().toString().trim();
-                    if (!destText.equals(getString(R.string.select_destination))) {
-                        mCopyDestinationPath = destText;
-                    }
-                }
-            });
-
-            pickerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
-                @Override
-                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-                    final FileDirItem item = items.get(position);
-                    if (item.getIsDirectory()) {
-                        breadcrumbs.addBreadcrumb(item, true);
-                        mCopyDestinationPath = item.getPath();
-                        final List<FileDirItem> newItems = getItems(mCopyDestinationPath);
-                        Collections.sort(newItems);
-                        if (containsDirectory(newItems)) {
-                            adapter.updateItems(newItems);
-                        } else {
-                            alertDialog.dismiss();
-                            ((TextView) destinationView).setText(mCopyDestinationPath);
-                        }
-                    }
-                }
-            });
         }
     };
 
-    private boolean containsDirectory(List<FileDirItem> items) {
+    @Override
-        for (FileDirItem item : items) {
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
-            if (item.getIsDirectory()) {
+        if (requestCode == SELECT_FOLDER_REQUEST && resultCode == Activity.RESULT_OK && data != null) {
-                return true;
+            mDestinationView.setText(data.getStringExtra(SELECT_FOLDER_PATH));
         }
-        }
+        super.onActivityResult(requestCode, resultCode, data);
-        return false;
     }
 
     @Override