/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
package com.android.internal.app;
import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
import com.android.internal.R;
import android.annotation.Nullable;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.TypedArray;
import android.database.Cursor;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewParent;
import android.view.ViewStub;
import android.view.Window;
import android.view.WindowInsets;
import android.view.WindowManager;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckedTextView;
import android.widget.CursorAdapter;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.ScrollView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import java.lang.ref.WeakReference;
public class AlertController {
private final Context mContext;
private final DialogInterface mDialogInterface;
private final Window mWindow;
private CharSequence mTitle;
private CharSequence mMessage;
private ListView mListView;
private View mView;
private int mViewLayoutResId;
private int mViewSpacingLeft;
private int mViewSpacingTop;
private int mViewSpacingRight;
private int mViewSpacingBottom;
private boolean mViewSpacingSpecified = false;
private Button mButtonPositive;
private CharSequence mButtonPositiveText;
private Message mButtonPositiveMessage;
private Button mButtonNegative;
private CharSequence mButtonNegativeText;
private Message mButtonNegativeMessage;
private Button mButtonNeutral;
private CharSequence mButtonNeutralText;
private Message mButtonNeutralMessage;
private ScrollView mScrollView;
private int mIconId = 0;
private Drawable mIcon;
private ImageView mIconView;
private TextView mTitleView;
private TextView mMessageView;
private View mCustomTitleView;
private boolean mForceInverseBackground;
private ListAdapter mAdapter;
private int mCheckedItem = -1;
private int mAlertDialogLayout;
private int mButtonPanelSideLayout;
private int mListLayout;
private int mMultiChoiceItemLayout;
private int mSingleChoiceItemLayout;
private int mListItemLayout;
private int mButtonPanelLayoutHint = AlertDialog.LAYOUT_HINT_NONE;
private Handler mHandler;
private final View.OnClickListener mButtonHandler = new View.OnClickListener() {
@Override
public void onClick(View v) {
final Message m;
if (v == mButtonPositive && mButtonPositiveMessage != null) {
m = Message.obtain(mButtonPositiveMessage);
} else if (v == mButtonNegative && mButtonNegativeMessage != null) {
m = Message.obtain(mButtonNegativeMessage);
} else if (v == mButtonNeutral && mButtonNeutralMessage != null) {
m = Message.obtain(mButtonNeutralMessage);
} else {
m = null;
}
if (m != null) {
m.sendToTarget();
}
// Post a message so we dismiss after the above handlers are executed
mHandler.obtainMessage(ButtonHandler.MSG_DISMISS_DIALOG, mDialogInterface)
.sendToTarget();
}
};
private static final class ButtonHandler extends Handler {
// Button clicks have Message.what as the BUTTON{1,2,3} constant
private static final int MSG_DISMISS_DIALOG = 1;
private WeakReference<DialogInterface> mDialog;
public ButtonHandler(DialogInterface dialog) {
mDialog = new WeakReference<DialogInterface>(dialog);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case DialogInterface.BUTTON_POSITIVE:
case DialogInterface.BUTTON_NEGATIVE:
case DialogInterface.BUTTON_NEUTRAL:
((DialogInterface.OnClickListener) msg.obj).onClick(mDialog.get(), msg.what);
break;
case MSG_DISMISS_DIALOG:
((DialogInterface) msg.obj).dismiss();
}
}
}
private static boolean shouldCenterSingleButton(Context context) {
final TypedValue outValue = new TypedValue();
context.getTheme().resolveAttribute(R.attr.alertDialogCenterButtons, outValue, true);
return outValue.data != 0;
}
public AlertController(Context context, DialogInterface di, Window window) {
mContext = context;
mDialogInterface = di;
mWindow = window;
mHandler = new ButtonHandler(di);
final TypedArray a = context.obtainStyledAttributes(null,
R.styleable.AlertDialog, R.attr.alertDialogStyle, 0);
mAlertDialogLayout = a.getResourceId(
R.styleable.AlertDialog_layout, R.layout.alert_dialog);
mButtonPanelSideLayout = a.getResourceId(
R.styleable.AlertDialog_buttonPanelSideLayout, 0);
mListLayout = a.getResourceId(
R.styleable.AlertDialog_listLayout, R.layout.select_dialog);
mMultiChoiceItemLayout = a.getResourceId(
R.styleable.AlertDialog_multiChoiceItemLayout,
R.layout.select_dialog_multichoice);
mSingleChoiceItemLayout = a.getResourceId(
R.styleable.AlertDialog_singleChoiceItemLayout,
R.layout.select_dialog_singlechoice);
mListItemLayout = a.getResourceId(
R.styleable.AlertDialog_listItemLayout,
R.layout.select_dialog_item);
a.recycle();
}
static boolean canTextInput(View v) {
if (v.onCheckIsTextEditor()) {
return true;
}
if (!(v instanceof ViewGroup)) {
return false;
}
ViewGroup vg = (ViewGroup)v;
int i = vg.getChildCount();
while (i > 0) {
i--;
v = vg.getChildAt(i);
if (canTextInput(v)) {
return true;
}
}
return false;
}
public void installContent() {
/* We use a custom title so never request a window title */
mWindow.requestFeature(Window.FEATURE_NO_TITLE);
int contentView = selectContentView();
mWindow.setContentView(contentView);
setupView();
setupDecor();
}
private int selectContentView() {
if (mButtonPanelSideLayout == 0) {
return mAlertDialogLayout;
}
if (mButtonPanelLayoutHint == AlertDialog.LAYOUT_HINT_SIDE) {
return mButtonPanelSideLayout;
}
// TODO: use layout hint side for long messages/lists
return mAlertDialogLayout;
}
public void setTitle(CharSequence title) {
mTitle = title;
if (mTitleView != null) {
mTitleView.setText(title);
}
}
/**
* @see AlertDialog.Builder#setCustomTitle(View)
*/
public void setCustomTitle(View customTitleView) {
mCustomTitleView = customTitleView;
}
public void setMessage(CharSequence message) {
mMessage = message;
if (mMessageView != null) {
mMessageView.setText(message);
}
}
/**
* Set the view resource to display in the dialog.
*/
public void setView(int layoutResId) {
mView = null;
mViewLayoutResId = layoutResId;
mViewSpacingSpecified = false;
}
/**
* Set the view to display in the dialog.
*/
public void setView(View view) {
mView = view;
mViewLayoutResId = 0;
mViewSpacingSpecified = false;
}
/**
* Set the view to display in the dialog along with the spacing around that view
*/
public void setView(View view, int viewSpacingLeft, int viewSpacingTop, int viewSpacingRight,
int viewSpacingBottom) {
mView = view;
mViewLayoutResId = 0;
mViewSpacingSpecified = true;
mViewSpacingLeft = viewSpacingLeft;
mViewSpacingTop = viewSpacingTop;
mViewSpacingRight = viewSpacingRight;
mViewSpacingBottom = viewSpacingBottom;
}
/**
* Sets a hint for the best button panel layout.
*/
public void setButtonPanelLayoutHint(int layoutHint) {
mButtonPanelLayoutHint = layoutHint;
}
/**
* Sets a click listener or a message to be sent when the button is clicked.
* You only need to pass one of {@code listener} or {@code msg}.
*
* @param whichButton Which button, can be one of
* {@link DialogInterface#BUTTON_POSITIVE},
* {@link DialogInterface#BUTTON_NEGATIVE}, or
* {@link DialogInterface#BUTTON_NEUTRAL}
* @param text The text to display in positive button.
* @param listener The {@link DialogInterface.OnClickListener} to use.
* @param msg The {@link Message} to be sent when clicked.
*/
public void setButton(int whichButton, CharSequence text,
DialogInterface.OnClickListener listener, Message msg) {
if (msg == null && listener != null) {
msg = mHandler.obtainMessage(whichButton, listener);
}
switch (whichButton) {
case DialogInterface.BUTTON_POSITIVE:
mButtonPositiveText = text;
mButtonPositiveMessage = msg;
break;
case DialogInterface.BUTTON_NEGATIVE:
mButtonNegativeText = text;
mButtonNegativeMessage = msg;
break;
case DialogInterface.BUTTON_NEUTRAL:
mButtonNeutralText = text;
mButtonNeutralMessage = msg;
break;
default:
throw new IllegalArgumentException("Button does not exist");
}
}
/**
* Specifies the icon to display next to the alert title.
*
* @param resId the resource identifier of the drawable to use as the icon,
* or 0 for no icon
*/
public void setIcon(int resId) {
mIcon = null;
mIconId = resId;
if (mIconView != null) {
if (resId != 0) {
mIconView.setImageResource(mIconId);
} else {
mIconView.setVisibility(View.GONE);
}
}
}
/**
* Specifies the icon to display next to the alert title.
*
* @param icon the drawable to use as the icon or null for no icon
*/
public void setIcon(Drawable icon) {
mIcon = icon;
mIconId = 0;
if (mIconView != null) {
if (icon != null) {
mIconView.setImageDrawable(icon);
} else {
mIconView.setVisibility(View.GONE);
}
}
}
/**
* @param attrId the attributeId of the theme-specific drawable
* to resolve the resourceId for.
*
* @return resId the resourceId of the theme-specific drawable
*/
public int getIconAttributeResId(int attrId) {
TypedValue out = new TypedValue();
mContext.getTheme().resolveAttribute(attrId, out, true);
return out.resourceId;
}
public void setInverseBackgroundForced(boolean forceInverseBackground) {
mForceInverseBackground = forceInverseBackground;
}
public ListView getListView() {
return mListView;
}
public Button getButton(int whichButton) {
switch (whichButton) {
case DialogInterface.BUTTON_POSITIVE:
return mButtonPositive;
case DialogInterface.BUTTON_NEGATIVE:
return mButtonNegative;
case DialogInterface.BUTTON_NEUTRAL:
return mButtonNeutral;
default:
return null;
}
}
@SuppressWarnings({"UnusedDeclaration"})
public boolean onKeyDown(int keyCode, KeyEvent event) {
return mScrollView != null && mScrollView.executeKeyEvent(event);
}
@SuppressWarnings({"UnusedDeclaration"})
public boolean onKeyUp(int keyCode, KeyEvent event) {
return mScrollView != null && mScrollView.executeKeyEvent(event);
}
private void setupDecor() {
final View decor = mWindow.getDecorView();
final View parent = mWindow.findViewById(R.id.parentPanel);
if (parent != null && decor != null) {
decor.setOnApplyWindowInsetsListener(new View.OnApplyWindowInsetsListener() {
@Override
public WindowInsets onApplyWindowInsets(View view, WindowInsets insets) {
if (insets.isRound()) {
// TODO: Get the padding as a function of the window size.
int roundOffset = mContext.getResources().getDimensionPixelOffset(
R.dimen.alert_dialog_round_padding);
parent.setPadding(roundOffset, roundOffset, roundOffset, roundOffset);
}
return insets.consumeSystemWindowInsets();
}
});
decor.setFitsSystemWindows(true);
decor.requestApplyInsets();
}
}
/**
* Resolves whether a custom or default panel should be used. Removes the
* default panel if a custom panel should be used. If the resolved panel is
* a view stub, inflates before returning.
*
* @param customPanel the custom panel
* @param defaultPanel the default panel
* @return the panel to use
*/
@Nullable
private ViewGroup resolvePanel(@Nullable View customPanel, @Nullable View defaultPanel) {
if (customPanel == null) {
// Inflate the default panel, if needed.
if (defaultPanel instanceof ViewStub) {
defaultPanel = ((ViewStub) defaultPanel).inflate();
}
return (ViewGroup) defaultPanel;
}
// Remove the default panel entirely.
if (defaultPanel != null) {
final ViewParent parent = defaultPanel.getParent();
if (parent instanceof ViewGroup) {
((ViewGroup) parent).removeView(defaultPanel);
}
}
// Inflate the custom panel, if needed.
if (customPanel instanceof ViewStub) {
customPanel = ((ViewStub) customPanel).inflate();
}
return (ViewGroup) customPanel;
}
private void setupView() {
final View parentPanel = mWindow.findViewById(R.id.parentPanel);
final View defaultTopPanel = parentPanel.findViewById(R.id.topPanel);
final View defaultContentPanel = parentPanel.findViewById(R.id.contentPanel);
final View defaultButtonPanel = parentPanel.findViewById(R.id.buttonPanel);
// Install custom content before setting up the title or buttons so
// that we can handle panel overrides.
final ViewGroup customPanel = (ViewGroup) parentPanel.findViewById(R.id.customPanel);
setupCustomContent(customPanel);
final View customTopPanel = customPanel.findViewById(R.id.topPanel);
final View customContentPanel = customPanel.findViewById(R.id.contentPanel);
final View customButtonPanel = customPanel.findViewById(R.id.buttonPanel);
// Resolve the correct panels and remove the defaults, if needed.
final ViewGroup topPanel = resolvePanel(customTopPanel, defaultTopPanel);
final ViewGroup contentPanel = resolvePanel(customContentPanel, defaultContentPanel);
final ViewGroup buttonPanel = resolvePanel(customButtonPanel, defaultButtonPanel);
setupContent(contentPanel);
setupButtons(buttonPanel);
setupTitle(topPanel);
final boolean hasCustomPanel = customPanel != null
&& customPanel.getVisibility() != View.GONE;
final boolean hasTopPanel = topPanel != null
&& topPanel.getVisibility() != View.GONE;
final boolean hasButtonPanel = buttonPanel != null
&& buttonPanel.getVisibility() != View.GONE;
// Only display the text spacer if we don't have buttons.
if (!hasButtonPanel) {
if (contentPanel != null) {
final View spacer = contentPanel.findViewById(R.id.textSpacerNoButtons);
if (spacer != null) {
spacer.setVisibility(View.VISIBLE);
}
}
mWindow.setCloseOnTouchOutsideIfNotSet(true);
}
if (hasTopPanel) {
// Only clip scrolling content to padding if we have a title.
if (mScrollView != null) {
mScrollView.setClipToPadding(true);
}
// Only show the divider if we have a title.
final View divider;
if (mMessage != null || mListView != null || hasCustomPanel) {
divider = topPanel.findViewById(R.id.titleDivider);
} else {
divider = topPanel.findViewById(R.id.titleDividerTop);
}
if (divider != null) {
divider.setVisibility(View.VISIBLE);
}
}
// Update scroll indicators as needed.
if (!hasCustomPanel) {
final View content = mListView != null ? mListView : mScrollView;
if (content != null) {
final int indicators = (hasTopPanel ? View.SCROLL_INDICATOR_TOP : 0)
| (hasButtonPanel ? View.SCROLL_INDICATOR_BOTTOM : 0);
content.setScrollIndicators(indicators,
View.SCROLL_INDICATOR_TOP | View.SCROLL_INDICATOR_BOTTOM);
}
}
final TypedArray a = mContext.obtainStyledAttributes(
null, R.styleable.AlertDialog, R.attr.alertDialogStyle, 0);
setBackground(a, topPanel, contentPanel, customPanel, buttonPanel,
hasTopPanel, hasCustomPanel, hasButtonPanel);
a.recycle();
}
private void setupCustomContent(ViewGroup customPanel) {
final View customView;
if (mView != null) {
customView = mView;
} else if (mViewLayoutResId != 0) {
final LayoutInflater inflater = LayoutInflater.from(mContext);
customView = inflater.inflate(mViewLayoutResId, customPanel, false);
} else {
customView = null;
}
final boolean hasCustomView = customView != null;
if (!hasCustomView || !canTextInput(customView)) {
mWindow.setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
}
if (hasCustomView) {
final FrameLayout custom = (FrameLayout) mWindow.findViewById(R.id.custom);
custom.addView(customView, new LayoutParams(MATCH_PARENT, MATCH_PARENT));
if (mViewSpacingSpecified) {
custom.setPadding(
mViewSpacingLeft, mViewSpacingTop, mViewSpacingRight, mViewSpacingBottom);
}
if (mListView != null) {
((LinearLayout.LayoutParams) customPanel.getLayoutParams()).weight = 0;
}
} else {
customPanel.setVisibility(View.GONE);
}
}
private void setupTitle(ViewGroup topPanel) {
if (mCustomTitleView != null) {
// Add the custom title view directly to the topPanel layout
LayoutParams lp = new LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
topPanel.addView(mCustomTitleView, 0, lp);
// Hide the title template
View titleTemplate = mWindow.findViewById(R.id.title_template);
titleTemplate.setVisibility(View.GONE);
} else {
mIconView = (ImageView) mWindow.findViewById(R.id.icon);
final boolean hasTextTitle = !TextUtils.isEmpty(mTitle);
if (hasTextTitle) {
// Display the title if a title is supplied, else hide it.
mTitleView = (TextView) mWindow.findViewById(R.id.alertTitle);
mTitleView.setText(mTitle);
// Do this last so that if the user has supplied any icons we
// use them instead of the default ones. If the user has
// specified 0 then make it disappear.
if (mIconId != 0) {
mIconView.setImageResource(mIconId);
} else if (mIcon != null) {
mIconView.setImageDrawable(mIcon);
} else {
// Apply the padding from the icon to ensure the title is
// aligned correctly.
mTitleView.setPadding(mIconView.getPaddingLeft(),
mIconView.getPaddingTop(),
mIconView.getPaddingRight(),
mIconView.getPaddingBottom());
mIconView.setVisibility(View.GONE);
}
} else {
// Hide the title template
final View titleTemplate = mWindow.findViewById(R.id.title_template);
titleTemplate.setVisibility(View.GONE);
mIconView.setVisibility(View.GONE);
topPanel.setVisibility(View.GONE);
}
}
}
private void setupContent(ViewGroup contentPanel) {
mScrollView = (ScrollView) contentPanel.findViewById(R.id.scrollView);
mScrollView.setFocusable(false);
// Special case for users that only want to display a String
mMessageView = (TextView) contentPanel.findViewById(R.id.message);
if (mMessageView == null) {
return;
}
if (mMessage != null) {
mMessageView.setText(mMessage);
} else {
mMessageView.setVisibility(View.GONE);
mScrollView.removeView(mMessageView);
if (mListView != null) {
final ViewGroup scrollParent = (ViewGroup) mScrollView.getParent();
final int childIndex = scrollParent.indexOfChild(mScrollView);
scrollParent.removeViewAt(childIndex);
scrollParent.addView(mListView, childIndex,
new LayoutParams(MATCH_PARENT, MATCH_PARENT));
} else {
contentPanel.setVisibility(View.GONE);
}
}
}
private static void manageScrollIndicators(View v, View upIndicator, View downIndicator) {
if (upIndicator != null) {
upIndicator.setVisibility(v.canScrollVertically(-1) ? View.VISIBLE : View.INVISIBLE);
}
if (downIndicator != null) {
downIndicator.setVisibility(v.canScrollVertically(1) ? View.VISIBLE : View.INVISIBLE);
}
}
private void setupButtons(ViewGroup buttonPanel) {
int BIT_BUTTON_POSITIVE = 1;
int BIT_BUTTON_NEGATIVE = 2;
int BIT_BUTTON_NEUTRAL = 4;
int whichButtons = 0;
mButtonPositive = (Button) buttonPanel.findViewById(R.id.button1);
mButtonPositive.setOnClickListener(mButtonHandler);
if (TextUtils.isEmpty(mButtonPositiveText)) {
mButtonPositive.setVisibility(View.GONE);
} else {
mButtonPositive.setText(mButtonPositiveText);
mButtonPositive.setVisibility(View.VISIBLE);
whichButtons = whichButtons | BIT_BUTTON_POSITIVE;
}
mButtonNegative = (Button) buttonPanel.findViewById(R.id.button2);
mButtonNegative.setOnClickListener(mButtonHandler);
if (TextUtils.isEmpty(mButtonNegativeText)) {
mButtonNegative.setVisibility(View.GONE);
} else {
mButtonNegative.setText(mButtonNegativeText);
mButtonNegative.setVisibility(View.VISIBLE);
whichButtons = whichButtons | BIT_BUTTON_NEGATIVE;
}
mButtonNeutral = (Button) buttonPanel.findViewById(R.id.button3);
mButtonNeutral.setOnClickListener(mButtonHandler);
if (TextUtils.isEmpty(mButtonNeutralText)) {
mButtonNeutral.setVisibility(View.GONE);
} else {
mButtonNeutral.setText(mButtonNeutralText);
mButtonNeutral.setVisibility(View.VISIBLE);
whichButtons = whichButtons | BIT_BUTTON_NEUTRAL;
}
if (shouldCenterSingleButton(mContext)) {
/*
* If we only have 1 button it should be centered on the layout and
* expand to fill 50% of the available space.
*/
if (whichButtons == BIT_BUTTON_POSITIVE) {
centerButton(mButtonPositive);
} else if (whichButtons == BIT_BUTTON_NEGATIVE) {
centerButton(mButtonNegative);
} else if (whichButtons == BIT_BUTTON_NEUTRAL) {
centerButton(mButtonNeutral);
}
}
final boolean hasButtons = whichButtons != 0;
if (!hasButtons) {
buttonPanel.setVisibility(View.GONE);
}
}
private void centerButton(Button button) {
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) button.getLayoutParams();
params.gravity = Gravity.CENTER_HORIZONTAL;
params.weight = 0.5f;
button.setLayoutParams(params);
View leftSpacer = mWindow.findViewById(R.id.leftSpacer);
if (leftSpacer != null) {
leftSpacer.setVisibility(View.VISIBLE);
}
View rightSpacer = mWindow.findViewById(R.id.rightSpacer);
if (rightSpacer != null) {
rightSpacer.setVisibility(View.VISIBLE);
}
}
private void setBackground(TypedArray a, View topPanel, View contentPanel, View customPanel,
View buttonPanel, boolean hasTitle, boolean hasCustomView, boolean hasButtons) {
int fullDark = 0;
int topDark = 0;
int centerDark = 0;
int bottomDark = 0;
int fullBright = 0;
int topBright = 0;
int centerBright = 0;
int bottomBright = 0;
int bottomMedium = 0;
// If the needsDefaultBackgrounds attribute is set, we know we're
// inheriting from a framework style.
final boolean needsDefaultBackgrounds = a.getBoolean(
R.styleable.AlertDialog_needsDefaultBackgrounds, true);
if (needsDefaultBackgrounds) {
fullDark = R.drawable.popup_full_dark;
topDark = R.drawable.popup_top_dark;
centerDark = R.drawable.popup_center_dark;
bottomDark = R.drawable.popup_bottom_dark;
fullBright = R.drawable.popup_full_bright;
topBright = R.drawable.popup_top_bright;
centerBright = R.drawable.popup_center_bright;
bottomBright = R.drawable.popup_bottom_bright;
bottomMedium = R.drawable.popup_bottom_medium;
}
topBright = a.getResourceId(R.styleable.AlertDialog_topBright, topBright);
topDark = a.getResourceId(R.styleable.AlertDialog_topDark, topDark);
centerBright = a.getResourceId(R.styleable.AlertDialog_centerBright, centerBright);
centerDark = a.getResourceId(R.styleable.AlertDialog_centerDark, centerDark);
/* We now set the background of all of the sections of the alert.
* First collect together each section that is being displayed along
* with whether it is on a light or dark background, then run through
* them setting their backgrounds. This is complicated because we need
* to correctly use the full, top, middle, and bottom graphics depending
* on how many views they are and where they appear.
*/
final View[] views = new View[4];
final boolean[] light = new boolean[4];
View lastView = null;
boolean lastLight = false;
int pos = 0;
if (hasTitle) {
views[pos] = topPanel;
light[pos] = false;
pos++;
}
/* The contentPanel displays either a custom text message or
* a ListView. If it's text we should use the dark background
* for ListView we should use the light background. If neither
* are there the contentPanel will be hidden so set it as null.
*/
views[pos] = contentPanel.getVisibility() == View.GONE ? null : contentPanel;
light[pos] = mListView != null;
pos++;
if (hasCustomView) {
views[pos] = customPanel;
light[pos] = mForceInverseBackground;
pos++;
}
if (hasButtons) {
views[pos] = buttonPanel;
light[pos] = true;
}
boolean setView = false;
for (pos = 0; pos < views.length; pos++) {
final View v = views[pos];
if (v == null) {
continue;
}
if (lastView != null) {
if (!setView) {
lastView.setBackgroundResource(lastLight ? topBright : topDark);
} else {
lastView.setBackgroundResource(lastLight ? centerBright : centerDark);
}
setView = true;
}
lastView = v;
lastLight = light[pos];
}
if (lastView != null) {
if (setView) {
bottomBright = a.getResourceId(R.styleable.AlertDialog_bottomBright, bottomBright);
bottomMedium = a.getResourceId(R.styleable.AlertDialog_bottomMedium, bottomMedium);
bottomDark = a.getResourceId(R.styleable.AlertDialog_bottomDark, bottomDark);
// ListViews will use the Bright background, but buttons use the
// Medium background.
lastView.setBackgroundResource(
lastLight ? (hasButtons ? bottomMedium : bottomBright) : bottomDark);
} else {
fullBright = a.getResourceId(R.styleable.AlertDialog_fullBright, fullBright);
fullDark = a.getResourceId(R.styleable.AlertDialog_fullDark, fullDark);
lastView.setBackgroundResource(lastLight ? fullBright : fullDark);
}
}
final ListView listView = mListView;
if (listView != null && mAdapter != null) {
listView.setAdapter(mAdapter);
final int checkedItem = mCheckedItem;
if (checkedItem > -1) {
listView.setItemChecked(checkedItem, true);
listView.setSelection(checkedItem);
}
}
}
public static class RecycleListView extends ListView {
boolean mRecycleOnMeasure = true;
public RecycleListView(Context context) {
super(context);
}
public RecycleListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public RecycleListView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public RecycleListView(
Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
@Override
protected boolean recycleOnMeasure() {
return mRecycleOnMeasure;
}
}
public static class AlertParams {
public final Context mContext;
public final LayoutInflater mInflater;
public int mIconId = 0;
public Drawable mIcon;
public int mIconAttrId = 0;
public CharSequence mTitle;
public View mCustomTitleView;
public CharSequence mMessage;
public CharSequence mPositiveButtonText;
public DialogInterface.OnClickListener mPositiveButtonListener;
public CharSequence mNegativeButtonText;
public DialogInterface.OnClickListener mNegativeButtonListener;
public CharSequence mNeutralButtonText;
public DialogInterface.OnClickListener mNeutralButtonListener;
public boolean mCancelable;
public DialogInterface.OnCancelListener mOnCancelListener;
public DialogInterface.OnDismissListener mOnDismissListener;
public DialogInterface.OnKeyListener mOnKeyListener;
public CharSequence[] mItems;
public ListAdapter mAdapter;
public DialogInterface.OnClickListener mOnClickListener;
public int mViewLayoutResId;
public View mView;
public int mViewSpacingLeft;
public int mViewSpacingTop;
public int mViewSpacingRight;
public int mViewSpacingBottom;
public boolean mViewSpacingSpecified = false;
public boolean[] mCheckedItems;
public boolean mIsMultiChoice;
public boolean mIsSingleChoice;
public int mCheckedItem = -1;
public DialogInterface.OnMultiChoiceClickListener mOnCheckboxClickListener;
public Cursor mCursor;
public String mLabelColumn;
public String mIsCheckedColumn;
public boolean mForceInverseBackground;
public AdapterView.OnItemSelectedListener mOnItemSelectedListener;
public OnPrepareListViewListener mOnPrepareListViewListener;
public boolean mRecycleOnMeasure = true;
/**
* Interface definition for a callback to be invoked before the ListView
* will be bound to an adapter.
*/
public interface OnPrepareListViewListener {
/**
* Called before the ListView is bound to an adapter.
* @param listView The ListView that will be shown in the dialog.
*/
void onPrepareListView(ListView listView);
}
public AlertParams(Context context) {
mContext = context;
mCancelable = true;
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void apply(AlertController dialog) {
if (mCustomTitleView != null) {
dialog.setCustomTitle(mCustomTitleView);
} else {
if (mTitle != null) {
dialog.setTitle(mTitle);
}
if (mIcon != null) {
dialog.setIcon(mIcon);
}
if (mIconId != 0) {
dialog.setIcon(mIconId);
}
if (mIconAttrId != 0) {
dialog.setIcon(dialog.getIconAttributeResId(mIconAttrId));
}
}
if (mMessage != null) {
dialog.setMessage(mMessage);
}
if (mPositiveButtonText != null) {
dialog.setButton(DialogInterface.BUTTON_POSITIVE, mPositiveButtonText,
mPositiveButtonListener, null);
}
if (mNegativeButtonText != null) {
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, mNegativeButtonText,
mNegativeButtonListener, null);
}
if (mNeutralButtonText != null) {
dialog.setButton(DialogInterface.BUTTON_NEUTRAL, mNeutralButtonText,
mNeutralButtonListener, null);
}
if (mForceInverseBackground) {
dialog.setInverseBackgroundForced(true);
}
// For a list, the client can either supply an array of items or an
// adapter or a cursor
if ((mItems != null) || (mCursor != null) || (mAdapter != null)) {
createListView(dialog);
}
if (mView != null) {
if (mViewSpacingSpecified) {
dialog.setView(mView, mViewSpacingLeft, mViewSpacingTop, mViewSpacingRight,
mViewSpacingBottom);
} else {
dialog.setView(mView);
}
} else if (mViewLayoutResId != 0) {
dialog.setView(mViewLayoutResId);
}
/*
dialog.setCancelable(mCancelable);
dialog.setOnCancelListener(mOnCancelListener);
if (mOnKeyListener != null) {
dialog.setOnKeyListener(mOnKeyListener);
}
*/
}
private void createListView(final AlertController dialog) {
final RecycleListView listView =
(RecycleListView) mInflater.inflate(dialog.mListLayout, null);
final ListAdapter adapter;
if (mIsMultiChoice) {
if (mCursor == null) {
adapter = new ArrayAdapter<CharSequence>(
mContext, dialog.mMultiChoiceItemLayout, R.id.text1, mItems) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
if (mCheckedItems != null) {
boolean isItemChecked = mCheckedItems[position];
if (isItemChecked) {
listView.setItemChecked(position, true);
}
}
return view;
}
};
} else {
adapter = new CursorAdapter(mContext, mCursor, false) {
private final int mLabelIndex;
private final int mIsCheckedIndex;
{
final Cursor cursor = getCursor();
mLabelIndex = cursor.getColumnIndexOrThrow(mLabelColumn);
mIsCheckedIndex = cursor.getColumnIndexOrThrow(mIsCheckedColumn);
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
CheckedTextView text = (CheckedTextView) view.findViewById(R.id.text1);
text.setText(cursor.getString(mLabelIndex));
listView.setItemChecked(cursor.getPosition(),
cursor.getInt(mIsCheckedIndex) == 1);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return mInflater.inflate(dialog.mMultiChoiceItemLayout,
parent, false);
}
};
}
} else {
final int layout;
if (mIsSingleChoice) {
layout = dialog.mSingleChoiceItemLayout;
} else {
layout = dialog.mListItemLayout;
}
if (mCursor != null) {
adapter = new SimpleCursorAdapter(mContext, layout, mCursor,
new String[] { mLabelColumn }, new int[] { R.id.text1 });
} else if (mAdapter != null) {
adapter = mAdapter;
} else {
adapter = new CheckedItemAdapter(mContext, layout, R.id.text1, mItems);
}
}
if (mOnPrepareListViewListener != null) {
mOnPrepareListViewListener.onPrepareListView(listView);
}
/* Don't directly set the adapter on the ListView as we might
* want to add a footer to the ListView later.
*/
dialog.mAdapter = adapter;
dialog.mCheckedItem = mCheckedItem;
if (mOnClickListener != null) {
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
mOnClickListener.onClick(dialog.mDialogInterface, position);
if (!mIsSingleChoice) {
dialog.mDialogInterface.dismiss();
}
}
});
} else if (mOnCheckboxClickListener != null) {
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
if (mCheckedItems != null) {
mCheckedItems[position] = listView.isItemChecked(position);
}
mOnCheckboxClickListener.onClick(
dialog.mDialogInterface, position, listView.isItemChecked(position));
}
});
}
// Attach a given OnItemSelectedListener to the ListView
if (mOnItemSelectedListener != null) {
listView.setOnItemSelectedListener(mOnItemSelectedListener);
}
if (mIsSingleChoice) {
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
} else if (mIsMultiChoice) {
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}
listView.mRecycleOnMeasure = mRecycleOnMeasure;
dialog.mListView = listView;
}
}
private static class CheckedItemAdapter extends ArrayAdapter<CharSequence> {
public CheckedItemAdapter(Context context, int resource, int textViewResourceId,
CharSequence[] objects) {
super(context, resource, textViewResourceId, objects);
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public long getItemId(int position) {
return position;
}
}
}