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
17package com.android.documentsui;
18
19import android.app.Fragment;
20import android.app.FragmentManager;
21import android.app.FragmentTransaction;
22import android.content.Context;
23import android.os.Bundle;
24import android.text.Editable;
25import android.text.TextWatcher;
26import android.view.LayoutInflater;
27import android.view.View;
28import android.view.ViewGroup;
29import android.widget.Button;
30import android.widget.EditText;
31import android.widget.ImageView;
32import android.widget.ProgressBar;
33
34import com.android.documentsui.model.DocumentInfo;
35
36/**
37 * Display document title editor and save button.
38 */
39public 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