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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.documentsui;
     18 
     19 import android.app.Fragment;
     20 import android.app.FragmentManager;
     21 import android.app.FragmentTransaction;
     22 import android.content.Context;
     23 import android.os.Bundle;
     24 import android.text.Editable;
     25 import android.text.TextWatcher;
     26 import android.util.Log;
     27 import android.view.LayoutInflater;
     28 import android.view.View;
     29 import android.view.ViewGroup;
     30 import android.widget.Button;
     31 import android.widget.EditText;
     32 import android.widget.ImageView;
     33 import android.widget.ProgressBar;
     34 
     35 import com.android.documentsui.model.DocumentInfo;
     36 
     37 /**
     38  * Display document title editor and save button.
     39  */
     40 public class SaveFragment extends Fragment {
     41     public static final String TAG = "SaveFragment";
     42 
     43     private DocumentInfo mReplaceTarget;
     44     private EditText mDisplayName;
     45     private Button mSave;
     46     private ProgressBar mProgress;
     47     private boolean mIgnoreNextEdit;
     48 
     49     private static final String EXTRA_MIME_TYPE = "mime_type";
     50     private static final String EXTRA_DISPLAY_NAME = "display_name";
     51 
     52     public static void show(FragmentManager fm, String mimeType, String displayName) {
     53         final Bundle args = new Bundle();
     54         args.putString(EXTRA_MIME_TYPE, mimeType);
     55         args.putString(EXTRA_DISPLAY_NAME, displayName);
     56 
     57         final SaveFragment fragment = new SaveFragment();
     58         fragment.setArguments(args);
     59 
     60         final FragmentTransaction ft = fm.beginTransaction();
     61         ft.replace(R.id.container_save, fragment, TAG);
     62         ft.commitAllowingStateLoss();
     63     }
     64 
     65     public static SaveFragment get(FragmentManager fm) {
     66         return (SaveFragment) fm.findFragmentByTag(TAG);
     67     }
     68 
     69     @Override
     70     public View onCreateView(
     71             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     72         final Context context = inflater.getContext();
     73 
     74         final View view = inflater.inflate(R.layout.fragment_save, container, false);
     75 
     76         final ImageView icon = (ImageView) view.findViewById(android.R.id.icon);
     77         icon.setImageDrawable(
     78                 IconUtils.loadMimeIcon(context, getArguments().getString(EXTRA_MIME_TYPE)));
     79 
     80         mDisplayName = (EditText) view.findViewById(android.R.id.title);
     81         mDisplayName.addTextChangedListener(mDisplayNameWatcher);
     82         mDisplayName.setText(getArguments().getString(EXTRA_DISPLAY_NAME));
     83 
     84         mSave = (Button) view.findViewById(android.R.id.button1);
     85         mSave.setOnClickListener(mSaveListener);
     86         mSave.setEnabled(false);
     87 
     88         mProgress = (ProgressBar) view.findViewById(android.R.id.progress);
     89 
     90         return view;
     91     }
     92 
     93     private TextWatcher mDisplayNameWatcher = new TextWatcher() {
     94         @Override
     95         public void onTextChanged(CharSequence s, int start, int before, int count) {
     96             if (mIgnoreNextEdit) {
     97                 mIgnoreNextEdit = false;
     98             } else {
     99                 mReplaceTarget = null;
    100             }
    101         }
    102 
    103         @Override
    104         public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    105             // ignored
    106         }
    107 
    108         @Override
    109         public void afterTextChanged(Editable s) {
    110             // ignored
    111         }
    112     };
    113 
    114     private View.OnClickListener mSaveListener = new View.OnClickListener() {
    115         @Override
    116         public void onClick(View v) {
    117             final DocumentsActivity activity = DocumentsActivity.get(SaveFragment.this);
    118             if (mReplaceTarget != null) {
    119                 activity.onSaveRequested(mReplaceTarget);
    120             } else {
    121                 final String mimeType = getArguments().getString(EXTRA_MIME_TYPE);
    122                 final String displayName = mDisplayName.getText().toString();
    123                 activity.onSaveRequested(mimeType, displayName);
    124             }
    125         }
    126     };
    127 
    128     /**
    129      * Set given document as target for in-place writing if user hits save
    130      * without changing the filename. Can be set to {@code null} if user
    131      * navigates outside the target directory.
    132      */
    133     public void setReplaceTarget(DocumentInfo replaceTarget) {
    134         mReplaceTarget = replaceTarget;
    135 
    136         if (mReplaceTarget != null) {
    137             getArguments().putString(EXTRA_DISPLAY_NAME, replaceTarget.displayName);
    138             mIgnoreNextEdit = true;
    139             mDisplayName.setText(replaceTarget.displayName);
    140         }
    141     }
    142 
    143     public void setSaveEnabled(boolean enabled) {
    144         mSave.setEnabled(enabled);
    145     }
    146 
    147     public void setPending(boolean pending) {
    148         mSave.setVisibility(pending ? View.INVISIBLE : View.VISIBLE);
    149         mProgress.setVisibility(pending ? View.VISIBLE : View.GONE);
    150     }
    151 }
    152