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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.view.LayoutInflater;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.widget.Button;
     30 import android.widget.EditText;
     31 import android.widget.ImageView;
     32 import android.widget.ProgressBar;
     33 
     34 import com.android.documentsui.model.DocumentInfo;
     35 
     36 /**
     37  * Display document title editor and save button.
     38  */
     39 public class SaveFragment extends Fragment {
     40     public static final String TAG = "SaveFragment";
     41 
     42     private DocumentInfo mReplaceTarget;
     43     private EditText mDisplayName;
     44     private Button mSave;
     45     private ProgressBar mProgress;
     46     private boolean mIgnoreNextEdit;
     47 
     48     private static final String EXTRA_MIME_TYPE = "mime_type";
     49     private static final String EXTRA_DISPLAY_NAME = "display_name";
     50 
     51     public static void show(FragmentManager fm, String mimeType, String displayName) {
     52         final Bundle args = new Bundle();
     53         args.putString(EXTRA_MIME_TYPE, mimeType);
     54         args.putString(EXTRA_DISPLAY_NAME, displayName);
     55 
     56         final SaveFragment fragment = new SaveFragment();
     57         fragment.setArguments(args);
     58 
     59         final FragmentTransaction ft = fm.beginTransaction();
     60         ft.replace(R.id.container_save, fragment, TAG);
     61         ft.commitAllowingStateLoss();
     62     }
     63 
     64     public static SaveFragment get(FragmentManager fm) {
     65         return (SaveFragment) fm.findFragmentByTag(TAG);
     66     }
     67 
     68     @Override
     69     public View onCreateView(
     70             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     71         final Context context = inflater.getContext();
     72 
     73         final View view = inflater.inflate(R.layout.fragment_save, container, false);
     74 
     75         final ImageView icon = (ImageView) view.findViewById(android.R.id.icon);
     76         icon.setImageDrawable(
     77                 IconUtils.loadMimeIcon(context, getArguments().getString(EXTRA_MIME_TYPE)));
     78 
     79         mDisplayName = (EditText) view.findViewById(android.R.id.title);
     80         mDisplayName.addTextChangedListener(mDisplayNameWatcher);
     81         mDisplayName.setText(getArguments().getString(EXTRA_DISPLAY_NAME));
     82 
     83         mSave = (Button) view.findViewById(android.R.id.button1);
     84         mSave.setOnClickListener(mSaveListener);
     85         mSave.setEnabled(false);
     86 
     87         mProgress = (ProgressBar) view.findViewById(android.R.id.progress);
     88 
     89         return view;
     90     }
     91 
     92     private TextWatcher mDisplayNameWatcher = new TextWatcher() {
     93         @Override
     94         public void onTextChanged(CharSequence s, int start, int before, int count) {
     95             if (mIgnoreNextEdit) {
     96                 mIgnoreNextEdit = false;
     97             } else {
     98                 mReplaceTarget = null;
     99             }
    100         }
    101 
    102         @Override
    103         public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    104             // ignored
    105         }
    106 
    107         @Override
    108         public void afterTextChanged(Editable s) {
    109             // ignored
    110         }
    111     };
    112 
    113     private View.OnClickListener mSaveListener = new View.OnClickListener() {
    114         @Override
    115         public void onClick(View v) {
    116             final DocumentsActivity activity = DocumentsActivity.get(SaveFragment.this);
    117             if (mReplaceTarget != null) {
    118                 activity.onSaveRequested(mReplaceTarget);
    119             } else {
    120                 final String mimeType = getArguments().getString(EXTRA_MIME_TYPE);
    121                 final String displayName = mDisplayName.getText().toString();
    122                 activity.onSaveRequested(mimeType, displayName);
    123             }
    124         }
    125     };
    126 
    127     /**
    128      * Set given document as target for in-place writing if user hits save
    129      * without changing the filename. Can be set to {@code null} if user
    130      * navigates outside the target directory.
    131      */
    132     public void setReplaceTarget(DocumentInfo replaceTarget) {
    133         mReplaceTarget = replaceTarget;
    134 
    135         if (mReplaceTarget != null) {
    136             getArguments().putString(EXTRA_DISPLAY_NAME, replaceTarget.displayName);
    137             mIgnoreNextEdit = true;
    138             mDisplayName.setText(replaceTarget.displayName);
    139         }
    140     }
    141 
    142     public void setSaveEnabled(boolean enabled) {
    143         mSave.setEnabled(enabled);
    144     }
    145 
    146     public void setPending(boolean pending) {
    147         mSave.setVisibility(pending ? View.INVISIBLE : View.VISIBLE);
    148         mProgress.setVisibility(pending ? View.VISIBLE : View.GONE);
    149     }
    150 }
    151