1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
package com.artifex.mupdfdemo;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.RectF;
import android.os.Handler;
class ProgressDialogX extends ProgressDialog {
public ProgressDialogX(Context context) {
super(context);
}
private boolean mCancelled = false;
public boolean isCancelled() {
return mCancelled;
}
@Override
public void cancel() {
mCancelled = true;
super.cancel();
}
}
public abstract class SearchTask {
private static final int SEARCH_PROGRESS_DELAY = 200;
private final Context mContext;
private final MuPDFCore mCore;
private final Handler mHandler;
private final AlertDialog.Builder mAlertBuilder;
private AsyncTask<Void,Integer,SearchTaskResult> mSearchTask;
public SearchTask(Context context, MuPDFCore core) {
mContext = context;
mCore = core;
mHandler = new Handler();
mAlertBuilder = new AlertDialog.Builder(context);
}
protected abstract void onTextFound(SearchTaskResult result);
public void stop() {
if (mSearchTask != null) {
mSearchTask.cancel(true);
mSearchTask = null;
}
}
public void go(final String text, int direction, int displayPage, int searchPage) {
if (mCore == null)
return;
stop();
final int increment = direction;
final int startIndex = searchPage == -1 ? displayPage : searchPage + increment;
final ProgressDialogX progressDialog = new ProgressDialogX(mContext);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setTitle(mContext.getString(R.string.searching_));
progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface dialog) {
stop();
}
});
progressDialog.setMax(mCore.countPages());
mSearchTask = new AsyncTask<Void,Integer,SearchTaskResult>() {
@Override
protected SearchTaskResult doInBackground(Void... params) {
int index = startIndex;
while (0 <= index && index < mCore.countPages() && !isCancelled()) {
publishProgress(index);
RectF searchHits[] = mCore.searchPage(index, text);
if (searchHits != null && searchHits.length > 0)
return new SearchTaskResult(text, index, searchHits);
index += increment;
}
return null;
}
@Override
protected void onPostExecute(SearchTaskResult result) {
progressDialog.cancel();
if (result != null) {
onTextFound(result);
} else {
mAlertBuilder.setTitle(SearchTaskResult.get() == null ? R.string.text_not_found : R.string.no_further_occurrences_found);
AlertDialog alert = mAlertBuilder.create();
alert.setButton(AlertDialog.BUTTON_POSITIVE, mContext.getString(R.string.dismiss),
(DialogInterface.OnClickListener)null);
alert.show();
}
}
@Override
protected void onCancelled() {
progressDialog.cancel();
}
@Override
protected void onProgressUpdate(Integer... values) {
progressDialog.setProgress(values[0].intValue());
}
@Override
protected void onPreExecute() {
super.onPreExecute();
mHandler.postDelayed(new Runnable() {
public void run() {
if (!progressDialog.isCancelled())
{
progressDialog.show();
progressDialog.setProgress(startIndex);
}
}
}, SEARCH_PROGRESS_DELAY);
}
};
mSearchTask.execute();
}
}
|
