package org.odk.collect.android.widgets;
/*
* Copyright (C) 2012 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
import java.io.File;
import org.javarosa.core.model.data.IAnswerData;
import org.javarosa.core.model.data.StringData;
import org.javarosa.form.api.FormEntryPrompt;
import org.odk.collect.android.R;
import org.odk.collect.android.activities.DrawActivity;
import org.odk.collect.android.activities.FormEntryActivity;
import org.odk.collect.android.application.Collect;
import org.odk.collect.android.utilities.FileUtils;
import org.odk.collect.android.utilities.MediaUtils;
import org.odk.collect.android.utilities.UrlUtils;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore.Images;
import android.util.Log;
import android.util.TypedValue;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* Signature widget.
*
* @author BehrAtherton@gmail.com
*
*/
public class SignatureWidget extends QuestionWidget implements IBinaryWidget {
private final static String t = "SignatureWidget";
private Button mSignButton;
private String mBinaryName;
private String mInstanceFolder;
private ImageView mImageView;
private boolean mWaitingForData;
private TextView mErrorTextView;
public SignatureWidget(Context context, FormEntryPrompt prompt) {
super(context, prompt);
mInstanceFolder =
FormEntryActivity.mInstancePath.substring(0,
FormEntryActivity.mInstancePath.lastIndexOf("/") + 1);
setOrientation(LinearLayout.VERTICAL);
TableLayout.LayoutParams params = new TableLayout.LayoutParams();
params.setMargins(7, 5, 7, 5);
mErrorTextView = new TextView(context);
mErrorTextView.setText("Selected file is not a valid image");
// setup Blank Image Button
mSignButton = new Button(getContext());
mSignButton.setText(getContext().getString(R.string.sign_button));
mSignButton.setTextSize(TypedValue.COMPLEX_UNIT_DIP, mAnswerFontsize);
mSignButton.setPadding(20, 20, 20, 20);
mSignButton.setEnabled(!prompt.isReadOnly());
mSignButton.setLayoutParams(params);
// launch capture intent on click
mSignButton.setOnClickListener(new View.OnClickListener() {
/*
* (non-Javadoc)
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
public void onClick(View v) {
launchSignatureActivity();
}
});
// finish complex layout
addView(mSignButton);
addView(mErrorTextView);
// and hide the sign button if read-only
if ( prompt.isReadOnly() ) {
mSignButton.setVisibility(View.GONE);
}
mErrorTextView.setVisibility(View.GONE);
// retrieve answer from data model and update ui
mBinaryName = prompt.getAnswerText();
// Only add the imageView if the user has signed
if (mBinaryName != null) {
mImageView = new ImageView(getContext());
Display display =
((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
int screenWidth = display.getWidth();
int screenHeight = display.getHeight();
File f = new File(mInstanceFolder + File.separator + mBinaryName);
if (f.exists()) {
Bitmap bmp = FileUtils.getBitmapScaledToDisplay(f, screenHeight, screenWidth);
if (bmp == null) {
mErrorTextView.setVisibility(View.VISIBLE);
}
mImageView.setImageBitmap(bmp);
} else {
mImageView.setImageBitmap(null);
}
mImageView.setPadding(10, 10, 10, 10);
mImageView.setAdjustViewBounds(true);
mImageView.setOnClickListener(new View.OnClickListener() {
/*
* (non-Javadoc)
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
public void onClick(View v) {
launchSignatureActivity();
}
});
addView(mImageView);
}
}
private void launchSignatureActivity() {
mErrorTextView.setVisibility(View.GONE);
Intent i = new Intent(getContext(), DrawActivity.class);
i.putExtra(DrawActivity.OPTION, DrawActivity.OPTION_SIGNATURE);
// copy...
//mBinaryName would be a preexisting signature that is getting displayed when the activity starts
if ( mBinaryName != null ) {
File f = new File(mInstanceFolder + File.separator + mBinaryName);
i.putExtra(DrawActivity.REF_IMAGE, Uri.fromFile(f));
}
//path to output the signature file to
i.putExtra(DrawActivity.EXTRA_OUTPUT,
Uri.fromFile(new File(Collect.TMPFILE_PATH)));
try {
//tells the form controller that when onActivityResult is called (when the DrawActivity)
//finishes, the requestCode is SIGNATURE_CAPTURE
((Activity)getContext()).startActivityForResult(i, FormEntryActivity.SIGNATURE_CAPTURE);
setWaitingForBinaryData();
}
catch (ActivityNotFoundException e) {
Toast.makeText(getContext(),
getContext().getString(R.string.activity_not_found, "signature capture"),
Toast.LENGTH_SHORT).show();
cancelWaitingForBinaryData();
}
}
private void deleteMedia() {
// get the file path and delete the file
File f = new File(mInstanceFolder + "/" + mBinaryName);
if (!f.delete()) {
Log.e(t, "Failed to delete " + f);
}
// clean up variables
mBinaryName = null;
//TODO: Possibly switch back to this implementation, but causes NullPointerException right now
/*int del = MediaUtils.deleteImageFileFromMediaProvider(mInstanceFolder + File.separator + mBinaryName);
Log.i(t, "Deleted " + del + " rows from media content provider");
mBinaryName = null;*/
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.QuestionWidget#clearAnswer()
*/
@Override
public void clearAnswer() {
// remove the file
deleteMedia();
mImageView.setImageBitmap(null);
mErrorTextView.setVisibility(View.GONE);
// reset buttons
mSignButton.setText(getContext().getString(R.string.sign_button));
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.QuestionWidget#getAnswer()
*/
@Override
public IAnswerData getAnswer() {
if (mBinaryName != null) {
return new StringData(mBinaryName.toString());
} else {
return null;
}
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.IBinaryWidget#setBinaryData(java.lang.Object)
*/
@Override
public void setBinaryData(Object binaryuri) {
// you are replacing an answer. delete the previous image using the
// content provider.
if (mBinaryName != null) {
deleteMedia();
}
String binarypath = UrlUtils.getPathFromUri((Uri) binaryuri,getContext());
File f = new File(binarypath);
mBinaryName = f.getName();
Log.i(t, "Setting current answer to " + f.getName());
mWaitingForData = false;
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.QuestionWidget#setFocus(android.content.Context)
*/
@Override
public void setFocus(Context context) {
// Hide the soft keyboard if it's showing.
InputMethodManager inputManager =
(InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(this.getWindowToken(), 0);
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.IBinaryWidget#isWaitingForBinaryData()
*/
@Override
public boolean isWaitingForBinaryData() {
return mWaitingForData;
}
public void setWaitingForBinaryData() {
mWaitingForData = true;
}
public void cancelWaitingForBinaryData() {
mWaitingForData = false;
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.QuestionWidget#setOnLongClickListener(android.view.View.OnLongClickListener)
*/
@Override
public void setOnLongClickListener(OnLongClickListener l) {
mSignButton.setOnLongClickListener(l);
if (mImageView != null) {
mImageView.setOnLongClickListener(l);
}
}
/*
* (non-Javadoc)
* @see org.odk.collect.android.widgets.QuestionWidget#cancelLongPress()
*/
@Override
public void cancelLongPress() {
super.cancelLongPress();
mSignButton.cancelLongPress();
if (mImageView != null) {
mImageView.cancelLongPress();
}
}
}