org.holoeverywhere.widget.AutoCompleteTextView Maven / Gradle / Ivy
package org.holoeverywhere.widget;
import org.holoeverywhere.ArrayAdapter;
import org.holoeverywhere.LayoutInflater;
import org.holoeverywhere.R;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Build.VERSION;
import android.text.Editable;
import android.text.InputType;
import android.text.Selection;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.inputmethod.CompletionInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ListAdapter;
public class AutoCompleteTextView extends EditText implements
Filter.FilterListener {
private class DropDownItemClickListener implements
AdapterView.OnItemClickListener {
@Override
public void onItemClick(AdapterView parent, View v, int position,
long id) {
performCompletion(v, position, id);
}
}
private class MyWatcher implements TextWatcher {
@Override
public void afterTextChanged(Editable s) {
doAfterTextChanged();
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
doBeforeTextChanged();
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
}
private class PassThroughClickListener implements OnClickListener {
private View.OnClickListener mWrapped;
@Override
public void onClick(View v) {
onClickImpl();
if (mWrapped != null) {
mWrapped.onClick(v);
}
}
}
private class PopupDataSetObserver extends DataSetObserver {
@Override
public void onChanged() {
if (mAdapter != null) {
post(new Runnable() {
@Override
public void run() {
final ListAdapter adapter = mAdapter;
if (adapter != null) {
updateDropDownForFilter(adapter.getCount());
}
}
});
}
}
}
public interface Validator {
CharSequence fixText(CharSequence invalidText);
boolean isValid(CharSequence text);
}
static final int EXPAND_MAX = 3;
static final String TAG = "AutoCompleteTextView";
private ListAdapter mAdapter;
private boolean mBlockCompletion;
private int mDropDownAnchorId;
private boolean mDropDownDismissedOnCompletion = true;
private Filter mFilter;
private int mHintResource;
private CharSequence mHintText;
private TextView mHintView;
private AdapterView.OnItemClickListener mItemClickListener;
private AdapterView.OnItemSelectedListener mItemSelectedListener;
private int mLastKeyCode = KeyEvent.KEYCODE_UNKNOWN;
private PopupDataSetObserver mObserver;
private boolean mOpenBefore;
private PassThroughClickListener mPassThroughClickListener;
private ListPopupWindow mPopup;
private boolean mPopupCanBeUpdated = true;
private int mThreshold;
private Validator mValidator = null;
public AutoCompleteTextView(Context context) {
this(context, null);
}
public AutoCompleteTextView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.autoCompleteTextViewStyle);
}
public AutoCompleteTextView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
mPopup = new ListPopupWindow(context, attrs,
R.attr.autoCompleteTextViewStyle);
mPopup.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
mPopup.setPromptPosition(ListPopupWindow.POSITION_PROMPT_BELOW);
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.AutoCompleteTextView, defStyle, 0);
mThreshold = a
.getInt(R.styleable.AutoCompleteTextView_android_completionThreshold,
2);
mPopup.setListSelector(a
.getDrawable(R.styleable.AutoCompleteTextView_android_dropDownSelector));
mPopup.setVerticalOffset((int) a.getDimension(
R.styleable.AutoCompleteTextView_dropDownVerticalOffset, 0.0f));
mPopup.setHorizontalOffset((int) a
.getDimension(
R.styleable.AutoCompleteTextView_dropDownHorizontalOffset,
0.0f));
mDropDownAnchorId = a.getResourceId(
R.styleable.AutoCompleteTextView_android_dropDownAnchor,
View.NO_ID);
mPopup.setWidth(a.getLayoutDimension(
R.styleable.AutoCompleteTextView_android_dropDownWidth,
ViewGroup.LayoutParams.WRAP_CONTENT));
mPopup.setHeight(a.getLayoutDimension(
R.styleable.AutoCompleteTextView_android_dropDownHeight,
ViewGroup.LayoutParams.WRAP_CONTENT));
mHintResource = a.getResourceId(
R.styleable.AutoCompleteTextView_android_completionHintView,
R.layout.simple_dropdown_hint);
mPopup.setOnItemClickListener(new DropDownItemClickListener());
setCompletionHint(a
.getText(R.styleable.AutoCompleteTextView_android_completionHint));
int inputType = getInputType();
if ((inputType & InputType.TYPE_MASK_CLASS) == InputType.TYPE_CLASS_TEXT) {
inputType |= InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE;
setRawInputType(inputType);
}
CharSequence[] entries = null;
if (a.hasValue(R.styleable.AutoCompleteTextView_android_entries)) {
entries = a
.getTextArray(R.styleable.AutoCompleteTextView_android_entries);
}
a.recycle();
setFocusable(true);
addTextChangedListener(new MyWatcher());
mPassThroughClickListener = new PassThroughClickListener();
super.setOnClickListener(mPassThroughClickListener);
if (entries != null) {
onLoadEntries(entries);
}
}
private void buildImeCompletions() {
final ListAdapter adapter = mAdapter;
if (adapter != null) {
InputMethodManager imm = (InputMethodManager) getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm != null) {
final int count = Math.min(adapter.getCount(), 20);
CompletionInfo[] completions = new CompletionInfo[count];
int realCount = 0;
for (int i = 0; i < count; i++) {
if (adapter.isEnabled(i)) {
Object item = adapter.getItem(i);
long id = adapter.getItemId(i);
completions[realCount] = new CompletionInfo(id,
realCount, convertSelectionToString(item));
realCount++;
}
}
if (realCount != count) {
CompletionInfo[] tmp = new CompletionInfo[realCount];
System.arraycopy(completions, 0, tmp, 0, realCount);
completions = tmp;
}
imm.displayCompletions(this, completions);
}
}
}
public void clearListSelection() {
mPopup.clearListSelection();
}
protected CharSequence convertSelectionToString(Object selectedItem) {
return mFilter.convertResultToString(selectedItem);
}
public void dismissDropDown() {
InputMethodManager imm = (InputMethodManager) getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm != null) {
imm.displayCompletions(this, null);
}
mPopup.dismiss();
mPopupCanBeUpdated = false;
}
void doAfterTextChanged() {
if (mBlockCompletion) {
return;
}
if (mOpenBefore && !isPopupShowing()) {
return;
}
if (enoughToFilter()) {
if (mFilter != null) {
mPopupCanBeUpdated = true;
performFiltering(getText(), mLastKeyCode);
}
} else {
if (!mPopup.isDropDownAlwaysVisible()) {
dismissDropDown();
}
if (mFilter != null) {
mFilter.filter(null);
}
}
}
void doBeforeTextChanged() {
if (mBlockCompletion) {
return;
}
mOpenBefore = isPopupShowing();
}
public boolean enoughToFilter() {
return getText().length() >= mThreshold;
}
public void ensureImeVisible(boolean visible) {
mPopup.setInputMethodMode(visible ? ListPopupWindow.INPUT_METHOD_NEEDED
: ListPopupWindow.INPUT_METHOD_NOT_NEEDED);
if (mPopup.isDropDownAlwaysVisible() || mFilter != null
&& enoughToFilter()) {
showDropDown();
}
}
public ListAdapter getAdapter() {
return mAdapter;
}
public CharSequence getCompletionHint() {
return mHintText;
}
public int getDropDownAnchor() {
return mDropDownAnchorId;
}
public int getDropDownAnimationStyle() {
return mPopup.getAnimationStyle();
}
public Drawable getDropDownBackground() {
return mPopup.getBackground();
}
public int getDropDownHeight() {
return mPopup.getHeight();
}
public int getDropDownHorizontalOffset() {
return mPopup.getHorizontalOffset();
}
public int getDropDownVerticalOffset() {
return mPopup.getVerticalOffset();
}
public int getDropDownWidth() {
return mPopup.getWidth();
}
protected Filter getFilter() {
return mFilter;
}
public int getListSelection() {
return mPopup.getSelectedItemPosition();
}
public AdapterView.OnItemClickListener getOnItemClickListener() {
return mItemClickListener;
}
public AdapterView.OnItemSelectedListener getOnItemSelectedListener() {
return mItemSelectedListener;
}
public int getThreshold() {
return mThreshold;
}
public Validator getValidator() {
return mValidator;
}
public boolean isDropDownAlwaysVisible() {
return mPopup.isDropDownAlwaysVisible();
}
public boolean isDropDownDismissedOnCompletion() {
return mDropDownDismissedOnCompletion;
}
public boolean isInputMethodNotNeeded() {
return mPopup.getInputMethodMode() == ListPopupWindow.INPUT_METHOD_NOT_NEEDED;
}
public boolean isPerformingCompletion() {
return mBlockCompletion;
}
public boolean isPopupShowing() {
return mPopup.isShowing();
}
private void onClickImpl() {
if (isPopupShowing()) {
ensureImeVisible(true);
}
}
@Override
public void onCommitCompletion(CompletionInfo completion) {
if (isPopupShowing()) {
mPopup.performItemClick(completion.getPosition());
}
}
@Override
protected void onDetachedFromWindow() {
dismissDropDown();
super.onDetachedFromWindow();
}
@Override
protected void onDisplayHint(int hint) {
super.onDisplayHint(hint);
switch (hint) {
case INVISIBLE:
if (!mPopup.isDropDownAlwaysVisible()) {
dismissDropDown();
}
break;
}
}
@Override
public void onFilterComplete(int count) {
updateDropDownForFilter(count);
}
@Override
protected void onFocusChanged(boolean focused, int direction,
Rect previouslyFocusedRect) {
super.onFocusChanged(focused, direction, previouslyFocusedRect);
if (!focused) {
performValidation();
}
if (!focused && !mPopup.isDropDownAlwaysVisible()) {
dismissDropDown();
}
}
@Override
@SuppressLint("NewApi")
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (mPopup.onKeyDown(keyCode, event)) {
return true;
}
if (!isPopupShowing()) {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_DOWN:
if (VERSION.SDK_INT < 11 || event.hasNoModifiers()) {
performValidation();
}
}
}
if (isPopupShowing() && keyCode == KeyEvent.KEYCODE_TAB
&& (VERSION.SDK_INT < 11 || event.hasNoModifiers())) {
return true;
}
mLastKeyCode = keyCode;
boolean handled = super.onKeyDown(keyCode, event);
mLastKeyCode = KeyEvent.KEYCODE_UNKNOWN;
if (handled && isPopupShowing()) {
clearListSelection();
}
return handled;
}
@Override
@SuppressLint("NewApi")
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
if (VERSION.SDK_INT < 5) {
return false;
}
if (keyCode == KeyEvent.KEYCODE_BACK && isPopupShowing()
&& !mPopup.isDropDownAlwaysVisible()) {
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.getRepeatCount() == 0) {
KeyEvent.DispatcherState state = getKeyDispatcherState();
if (state != null) {
state.startTracking(event, this);
}
return true;
} else if (event.getAction() == KeyEvent.ACTION_UP) {
KeyEvent.DispatcherState state = getKeyDispatcherState();
if (state != null) {
state.handleUpEvent(event);
}
if (event.isTracking() && !event.isCanceled()) {
dismissDropDown();
return true;
}
}
}
return super.onKeyPreIme(keyCode, event);
}
@Override
@SuppressLint("NewApi")
public boolean onKeyUp(int keyCode, KeyEvent event) {
boolean consumed = mPopup.onKeyUp(keyCode, event);
if (consumed) {
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_TAB:
if (VERSION.SDK_INT < 11 || event.hasNoModifiers()) {
performCompletion();
}
return true;
}
}
if (isPopupShowing() && keyCode == KeyEvent.KEYCODE_TAB
&& (VERSION.SDK_INT < 11 || event.hasNoModifiers())) {
performCompletion();
return true;
}
return super.onKeyUp(keyCode, event);
}
protected void onLoadEntries(CharSequence[] entries) {
setAdapter(new ArrayAdapter(getContext(),
R.layout.simple_dropdown_item_1line, entries));
}
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
super.onWindowFocusChanged(hasWindowFocus);
if (!hasWindowFocus && !mPopup.isDropDownAlwaysVisible()) {
dismissDropDown();
}
}
public void performCompletion() {
performCompletion(null, -1, -1);
}
private void performCompletion(View selectedView, int position, long id) {
if (isPopupShowing()) {
Object selectedItem;
if (position < 0) {
selectedItem = mPopup.getSelectedItem();
} else {
selectedItem = mAdapter.getItem(position);
}
if (selectedItem == null) {
Log.w(AutoCompleteTextView.TAG,
"performCompletion: no selected item");
return;
}
mBlockCompletion = true;
replaceText(convertSelectionToString(selectedItem));
mBlockCompletion = false;
if (mItemClickListener != null) {
final ListPopupWindow list = mPopup;
if (selectedView == null || position < 0) {
selectedView = list.getSelectedView();
position = list.getSelectedItemPosition();
id = list.getSelectedItemId();
}
mItemClickListener.onItemClick(list.getListView(),
selectedView, position, id);
}
}
if (mDropDownDismissedOnCompletion && !mPopup.isDropDownAlwaysVisible()) {
dismissDropDown();
}
}
protected void performFiltering(CharSequence text, int keyCode) {
mFilter.filter(text, this);
}
public void performValidation() {
if (mValidator == null) {
return;
}
CharSequence text = getText();
if (!TextUtils.isEmpty(text) && !mValidator.isValid(text)) {
setText(mValidator.fixText(text));
}
}
protected void replaceText(CharSequence text) {
clearComposingText();
setText(text);
Editable spannable = getText();
Selection.setSelection(spannable, spannable.length());
}
public void setAdapter(T adapter) {
if (mObserver == null) {
mObserver = new PopupDataSetObserver();
} else if (mAdapter != null) {
mAdapter.unregisterDataSetObserver(mObserver);
}
mAdapter = adapter;
if (mAdapter != null) {
mFilter = ((Filterable) mAdapter).getFilter();
adapter.registerDataSetObserver(mObserver);
} else {
mFilter = null;
}
mPopup.setAdapter(mAdapter);
}
public void setCompletionHint(CharSequence hint) {
mHintText = hint;
if (hint != null) {
if (mHintView == null) {
final TextView hintView = (TextView) LayoutInflater.inflate(
getContext(), mHintResource).findViewById(
android.R.id.text1);
hintView.setText(mHintText);
mHintView = hintView;
mPopup.setPromptView(hintView);
} else {
mHintView.setText(hint);
}
} else {
mPopup.setPromptView(null);
mHintView = null;
}
}
public void setDropDownAlwaysVisible(boolean dropDownAlwaysVisible) {
mPopup.setDropDownAlwaysVisible(dropDownAlwaysVisible);
}
public void setDropDownAnchor(int id) {
mDropDownAnchorId = id;
mPopup.setAnchorView(null);
}
public void setDropDownAnimationStyle(int animationStyle) {
mPopup.setAnimationStyle(animationStyle);
}
public void setDropDownBackgroundDrawable(Drawable d) {
mPopup.setBackgroundDrawable(d);
}
public void setDropDownBackgroundResource(int id) {
mPopup.setBackgroundDrawable(getResources().getDrawable(id));
}
public void setDropDownDismissedOnCompletion(
boolean dropDownDismissedOnCompletion) {
mDropDownDismissedOnCompletion = dropDownDismissedOnCompletion;
}
public void setDropDownHeight(int height) {
mPopup.setHeight(height);
}
public void setDropDownHorizontalOffset(int offset) {
mPopup.setHorizontalOffset(offset);
}
public void setDropDownVerticalOffset(int offset) {
mPopup.setVerticalOffset(offset);
}
public void setDropDownWidth(int width) {
mPopup.setWidth(width);
}
public void setForceIgnoreOutsideTouch(boolean forceIgnoreOutsideTouch) {
mPopup.setForceIgnoreOutsideTouch(forceIgnoreOutsideTouch);
}
@Override
protected boolean setFrame(final int l, int t, final int r, int b) {
boolean result = super.setFrame(l, t, r, b);
if (isPopupShowing()) {
showDropDown();
}
return result;
}
public void setListSelection(int position) {
mPopup.setSelection(position);
}
@Override
public void setOnClickListener(OnClickListener listener) {
mPassThroughClickListener.mWrapped = listener;
}
public void setOnItemClickListener(AdapterView.OnItemClickListener l) {
mItemClickListener = l;
}
public void setOnItemSelectedListener(AdapterView.OnItemSelectedListener l) {
mItemSelectedListener = l;
}
public void setText(CharSequence text, boolean filter) {
if (filter) {
setText(text);
} else {
mBlockCompletion = true;
setText(text);
mBlockCompletion = false;
}
}
public void setThreshold(int threshold) {
if (threshold <= 0) {
threshold = 1;
}
mThreshold = threshold;
}
public void setValidator(Validator validator) {
mValidator = validator;
}
@SuppressLint("NewApi")
public void showDropDown() {
buildImeCompletions();
if (mPopup.getAnchorView() == null) {
if (mDropDownAnchorId != View.NO_ID) {
mPopup.setAnchorView(getRootView().findViewById(
mDropDownAnchorId));
} else {
mPopup.setAnchorView(this);
}
}
if (!isPopupShowing()) {
mPopup.setInputMethodMode(ListPopupWindow.INPUT_METHOD_NEEDED);
mPopup.setListItemExpandMax(AutoCompleteTextView.EXPAND_MAX);
}
mPopup.show();
if (VERSION.SDK_INT >= 9) {
mPopup.getListView().setOverScrollMode(View.OVER_SCROLL_ALWAYS);
}
}
public void showDropDownAfterLayout() {
mPopup.postShow();
}
private void updateDropDownForFilter(int count) {
if (getWindowVisibility() == View.GONE) {
return;
}
final boolean dropDownAlwaysVisible = mPopup.isDropDownAlwaysVisible();
final boolean enoughToFilter = enoughToFilter();
if ((count > 0 || dropDownAlwaysVisible) && enoughToFilter) {
if (hasFocus() && hasWindowFocus() && mPopupCanBeUpdated) {
showDropDown();
}
} else if (!dropDownAlwaysVisible && isPopupShowing()) {
dismissDropDown();
mPopupCanBeUpdated = true;
}
}
}
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