@SuppressWarnings("unchecked")
public GridMultiWidget(Context context, FormEntryPrompt prompt, int numColumns) {
super(context, prompt);
mItems = prompt.getSelectChoices();
mPrompt = prompt;
selected = new boolean[mItems.size()];
choices = new String[mItems.size()];
gridview = new GridView(context);
imageViews = new ImageView[mItems.size()];
maxColumnWidth = -1;
this.numColumns = numColumns;
for (int i = 0; i < mItems.size(); i++) {
imageViews[i] = new ImageView(getContext());
}
// Build view
for (int i = 0; i < mItems.size(); i++) {
SelectChoice sc = mItems.get(i);
// Read the image sizes and set maxColumnWidth. This allows us to make sure all of our
// columns are going to fit
String imageURI =
prompt.getSpecialFormSelectChoiceText(sc, FormEntryCaption.TEXT_FORM_IMAGE);
if (imageURI != null) {
choices[i] = imageURI;
String imageFilename;
try {
imageFilename = ReferenceManager._().DeriveReference(imageURI).getLocalURI();
final File imageFile = new File(imageFilename);
if (imageFile.exists()) {
Display display =
((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
int screenWidth = display.getWidth();
int screenHeight = display.getHeight();
Bitmap b =
FileUtils
.getBitmapScaledToDisplay(imageFile, screenHeight, screenWidth);
if (b != null) {
if (b.getWidth() > maxColumnWidth) {
maxColumnWidth = b.getWidth();
}
}
}
} catch (InvalidReferenceException e) {
Log.e("GridWidget", "image invalid reference exception");
e.printStackTrace();
}
} else {
choices[i] = prompt.getSelectChoiceText(sc);
}
}
// Use the custom image adapter and initialize the grid view
ImageAdapter ia = new ImageAdapter(getContext(), choices);
gridview.setAdapter(ia);
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
if (selected[position]) {
selected[position] = false;
imageViews[position].setBackgroundColor(Color.WHITE);
Collect.getInstance().getActivityLogger().logInstanceAction(this, "onItemClick.deselect",
mItems.get(position).getValue(), mPrompt.getIndex());
} else {
selected[position] = true;
imageViews[position].setBackgroundColor(Color.rgb(orangeRedVal, orangeGreenVal,
orangeBlueVal));
Collect.getInstance().getActivityLogger().logInstanceAction(this, "onItemClick.select",
mItems.get(position).getValue(), mPrompt.getIndex());
}
}
});
// Read the screen dimensions and fit the grid view to them. It is important that the grid
// view
// knows how far out it can stretch.
Display display =
((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
int screenWidth = display.getWidth();
int screenHeight = display.getHeight();
GridView.LayoutParams params = new GridView.LayoutParams(screenWidth - 5, screenHeight - 5);
gridview.setLayoutParams(params);
// Use the user's choice for num columns, otherwise automatically decide.
if (numColumns > 0) {
gridview.setNumColumns(numColumns);
} else {
gridview.setNumColumns(GridView.AUTO_FIT);
}
gridview.setColumnWidth(maxColumnWidth);
gridview.setHorizontalSpacing(2);
gridview.setVerticalSpacing(2);
gridview.setGravity(Gravity.LEFT);
gridview.setStretchMode(GridView.NO_STRETCH);
// Fill in answer
IAnswerData answer = prompt.getAnswerValue();
Vector<Selection> ve;
if ((answer == null) || (answer.getValue() == null)) {
ve = new Vector<Selection>();
} else {
ve = (Vector<Selection>) answer.getValue();
}
for (int i = 0; i < choices.length; ++i) {
String value = mItems.get(i).getValue();
boolean found = false;
for (Selection s : ve) {
if (value.equals(s.getValue())) {
found = true;
break;
}
}
selected[i] = found;
if (selected[i]) {
imageViews[i].setBackgroundColor(Color.rgb(orangeRedVal, orangeGreenVal,
orangeBlueVal));
} else {
imageViews[i].setBackgroundColor(Color.WHITE);
}
}
addView(gridview);
}
