| /* |
| * Copyright (C) 2015 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 android.support.v7.app; |
| |
| 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.Build; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.support.annotation.Nullable; |
| import android.support.v4.view.ViewCompat; |
| import android.support.v4.widget.NestedScrollView; |
| import android.support.v7.appcompat.R; |
| import android.text.TextUtils; |
| import android.util.TypedValue; |
| 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.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.SimpleCursorAdapter; |
| import android.widget.TextView; |
| |
| import java.lang.ref.WeakReference; |
| |
| import static android.view.ViewGroup.LayoutParams.MATCH_PARENT; |
| |
| class AlertController { |
| private final Context mContext; |
| private final AppCompatDialog mDialog; |
| 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 NestedScrollView mScrollView; |
| |
| private int mIconId = 0; |
| private Drawable mIcon; |
| |
| private ImageView mIconView; |
| private TextView mTitleView; |
| private TextView mMessageView; |
| private View mCustomTitleView; |
| |
| 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, mDialog) |
| .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<>(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(); |
| } |
| } |
| } |
| |
| public AlertController(Context context, AppCompatDialog di, Window window) { |
| mContext = context; |
| mDialog = 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_android_layout, 0); |
| mButtonPanelSideLayout = a.getResourceId(R.styleable.AlertDialog_buttonPanelSideLayout, 0); |
| |
| mListLayout = a.getResourceId(R.styleable.AlertDialog_listLayout, 0); |
| mMultiChoiceItemLayout = a.getResourceId(R.styleable.AlertDialog_multiChoiceItemLayout, 0); |
| mSingleChoiceItemLayout = a |
| .getResourceId(R.styleable.AlertDialog_singleChoiceItemLayout, 0); |
| mListItemLayout = a.getResourceId(R.styleable.AlertDialog_listItemLayout, 0); |
| |
| 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 */ |
| mDialog.supportRequestWindowFeature(Window.FEATURE_NO_TITLE); |
| final int contentView = selectContentView(); |
| mDialog.setContentView(contentView); |
| setupView(); |
| } |
| |
| private int selectContentView() { |
| if (mButtonPanelSideLayout == 0) { |
| return mAlertDialogLayout; |
| } |
| if (mButtonPanelLayoutHint == AlertDialog.LAYOUT_HINT_SIDE) { |
| return mButtonPanelSideLayout; |
| } |
| 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 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); |
| } |
| |
| /** |
| * 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); |
| } |
| } |
| } |
| |
| if (hasTopPanel) { |
| // Only clip scrolling content to padding if we have a title. |
| if (mScrollView != null) { |
| mScrollView.setClipToPadding(true); |
| } |
| } |
| |
| // Update scroll indicators as needed. |
| if (!hasCustomPanel) { |
| final View content = mListView != null ? mListView : mScrollView; |
| if (content != null) { |
| final int indicators = (hasTopPanel ? ViewCompat.SCROLL_INDICATOR_TOP : 0) |
| | (hasButtonPanel ? ViewCompat.SCROLL_INDICATOR_BOTTOM : 0); |
| setScrollIndicators(contentPanel, content, indicators, |
| ViewCompat.SCROLL_INDICATOR_TOP | ViewCompat.SCROLL_INDICATOR_BOTTOM); |
| } |
| } |
| |
| 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); |
| } |
| } |
| } |
| |
| private void setScrollIndicators(ViewGroup contentPanel, View content, |
| final int indicators, final int mask) { |
| // Set up scroll indicators (if present). |
| View indicatorUp = mWindow.findViewById(R.id.scrollIndicatorUp); |
| View indicatorDown = mWindow.findViewById(R.id.scrollIndicatorDown); |
| |
| if (Build.VERSION.SDK_INT >= 23) { |
| // We're on Marshmallow so can rely on the View APIs |
| ViewCompat.setScrollIndicators(content, indicators, mask); |
| // We can also remove the compat indicator views |
| if (indicatorUp != null) { |
| contentPanel.removeView(indicatorUp); |
| } |
| if (indicatorDown != null) { |
| contentPanel.removeView(indicatorDown); |
| } |
| } else { |
| // First, remove the indicator views if we're not set to use them |
| if (indicatorUp != null && (indicators & ViewCompat.SCROLL_INDICATOR_TOP) == 0) { |
| contentPanel.removeView(indicatorUp); |
| indicatorUp = null; |
| } |
| if (indicatorDown != null && (indicators & ViewCompat.SCROLL_INDICATOR_BOTTOM) == 0) { |
| contentPanel.removeView(indicatorDown); |
| indicatorDown = null; |
| } |
| |
| if (indicatorUp != null || indicatorDown != null) { |
| final View top = indicatorUp; |
| final View bottom = indicatorDown; |
| |
| if (mMessage != null) { |
| // We're just showing the ScrollView, set up listener. |
| mScrollView.setOnScrollChangeListener( |
| new NestedScrollView.OnScrollChangeListener() { |
| @Override |
| public void onScrollChange(NestedScrollView v, int scrollX, |
| int scrollY, |
| int oldScrollX, int oldScrollY) { |
| manageScrollIndicators(v, top, bottom); |
| } |
| }); |
| // Set up the indicators following layout. |
| mScrollView.post(new Runnable() { |
| @Override |
| public void run() { |
| manageScrollIndicators(mScrollView, top, bottom); |
| } |
| }); |
| } else if (mListView != null) { |
| // We're just showing the AbsListView, set up listener. |
| mListView.setOnScrollListener(new AbsListView.OnScrollListener() { |
| @Override |
| public void onScrollStateChanged(AbsListView view, int scrollState) {} |
| |
| @Override |
| public void onScroll(AbsListView v, int firstVisibleItem, |
| int visibleItemCount, int totalItemCount) { |
| manageScrollIndicators(v, top, bottom); |
| } |
| }); |
| // Set up the indicators following layout. |
| mListView.post(new Runnable() { |
| @Override |
| public void run() { |
| manageScrollIndicators(mListView, top, bottom); |
| } |
| }); |
| } else { |
| // We don't have any content to scroll, remove the indicators. |
| if (top != null) { |
| contentPanel.removeView(top); |
| } |
| if (bottom != null) { |
| contentPanel.removeView(bottom); |
| } |
| } |
| } |
| } |
| } |
| |
| 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(android.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 = (NestedScrollView) mWindow.findViewById(R.id.scrollView); |
| mScrollView.setFocusable(false); |
| mScrollView.setNestedScrollingEnabled(false); |
| |
| // Special case for users that only want to display a String |
| mMessageView = (TextView) contentPanel.findViewById(android.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( |
| ViewCompat.canScrollVertically(v, -1) ? View.VISIBLE : View.INVISIBLE); |
| } |
| if (downIndicator != null) { |
| downIndicator.setVisibility( |
| ViewCompat.canScrollVertically(v, 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(android.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(android.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(android.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; |
| } |
| |
| final boolean hasButtons = whichButtons != 0; |
| if (!hasButtons) { |
| buttonPanel.setVisibility(View.GONE); |
| } |
| } |
| |
| 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); |
| } |
| // 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 ListView listView = (ListView) mInflater.inflate(dialog.mListLayout, null); |
| final ListAdapter adapter; |
| |
| if (mIsMultiChoice) { |
| if (mCursor == null) { |
| adapter = new ArrayAdapter<CharSequence>( |
| mContext, dialog.mMultiChoiceItemLayout, android.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( |
| android.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[] { android.R.id.text1 }); |
| } else if (mAdapter != null) { |
| adapter = mAdapter; |
| } else { |
| adapter = new CheckedItemAdapter(mContext, layout, android.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.mDialog, position); |
| if (!mIsSingleChoice) { |
| dialog.mDialog.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.mDialog, 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); |
| } |
| 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; |
| } |
| } |
| } |
