--- /dev/null
+/*
+ * Copyright (C) 2007 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.actionbarsherlock.internal.widget;
+
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+import com.actionbarsherlock.R;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.res.TypedArray;
+import android.database.DataSetObserver;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
+import android.widget.ListAdapter;
+import android.widget.ListView;
+import android.widget.PopupWindow;
+import android.widget.SpinnerAdapter;
+
+
+/**
+ * A view that displays one child at a time and lets the user pick among them.
+ * The items in the Spinner come from the {@link Adapter} associated with
+ * this view.
+ *
+ * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-spinner.html">Spinner
+ * tutorial</a>.</p>
+ *
+ * @attr ref android.R.styleable#Spinner_prompt
+ */
+public class IcsSpinner extends IcsAbsSpinner implements OnClickListener {
+ //private static final String TAG = "Spinner";
+
+ // Only measure this many items to get a decent max width.
+ private static final int MAX_ITEMS_MEASURED = 15;
+
+ /**
+ * Use a dialog window for selecting spinner options.
+ */
+ //public static final int MODE_DIALOG = 0;
+
+ /**
+ * Use a dropdown anchored to the Spinner for selecting spinner options.
+ */
+ public static final int MODE_DROPDOWN = 1;
+
+ /**
+ * Use the theme-supplied value to select the dropdown mode.
+ */
+ //private static final int MODE_THEME = -1;
+
+ private SpinnerPopup mPopup;
+ private DropDownAdapter mTempAdapter;
+ int mDropDownWidth;
+
+ private int mGravity;
+ private boolean mDisableChildrenWhenDisabled;
+
+ private Rect mTempRect = new Rect();
+
+ public IcsSpinner(Context context, AttributeSet attrs) {
+ this(context, attrs, R.attr.actionDropDownStyle);
+ }
+
+ /**
+ * Construct a new spinner with the given context's theme, the supplied attribute set,
+ * and default style.
+ *
+ * @param context The Context the view is running in, through which it can
+ * access the current theme, resources, etc.
+ * @param attrs The attributes of the XML tag that is inflating the view.
+ * @param defStyle The default style to apply to this view. If 0, no style
+ * will be applied (beyond what is included in the theme). This may
+ * either be an attribute resource, whose value will be retrieved
+ * from the current theme, or an explicit style resource.
+ */
+ public IcsSpinner(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+
+ TypedArray a = context.obtainStyledAttributes(attrs,
+ R.styleable.SherlockSpinner, defStyle, 0);
+
+
+ DropdownPopup popup = new DropdownPopup(context, attrs, defStyle);
+
+ mDropDownWidth = a.getLayoutDimension(
+ R.styleable.SherlockSpinner_android_dropDownWidth,
+ ViewGroup.LayoutParams.WRAP_CONTENT);
+ popup.setBackgroundDrawable(a.getDrawable(
+ R.styleable.SherlockSpinner_android_popupBackground));
+ final int verticalOffset = a.getDimensionPixelOffset(
+ R.styleable.SherlockSpinner_android_dropDownVerticalOffset, 0);
+ if (verticalOffset != 0) {
+ popup.setVerticalOffset(verticalOffset);
+ }
+
+ final int horizontalOffset = a.getDimensionPixelOffset(
+ R.styleable.SherlockSpinner_android_dropDownHorizontalOffset, 0);
+ if (horizontalOffset != 0) {
+ popup.setHorizontalOffset(horizontalOffset);
+ }
+
+ mPopup = popup;
+
+ mGravity = a.getInt(R.styleable.SherlockSpinner_android_gravity, Gravity.CENTER);
+
+ mPopup.setPromptText(a.getString(R.styleable.SherlockSpinner_android_prompt));
+
+ mDisableChildrenWhenDisabled = true;
+
+ a.recycle();
+
+ // Base constructor can call setAdapter before we initialize mPopup.
+ // Finish setting things up if this happened.
+ if (mTempAdapter != null) {
+ mPopup.setAdapter(mTempAdapter);
+ mTempAdapter = null;
+ }
+ }
+
+ @Override
+ public void setEnabled(boolean enabled) {
+ super.setEnabled(enabled);
+ if (mDisableChildrenWhenDisabled) {
+ final int count = getChildCount();
+ for (int i = 0; i < count; i++) {
+ getChildAt(i).setEnabled(enabled);
+ }
+ }
+ }
+
+ /**
+ * Describes how the selected item view is positioned. Currently only the horizontal component
+ * is used. The default is determined by the current theme.
+ *
+ * @param gravity See {@link android.view.Gravity}
+ *
+ * @attr ref android.R.styleable#Spinner_gravity
+ */
+ public void setGravity(int gravity) {
+ if (mGravity != gravity) {
+ if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
+ gravity |= Gravity.LEFT;
+ }
+ mGravity = gravity;
+ requestLayout();
+ }
+ }
+
+ @Override
+ public void setAdapter(SpinnerAdapter adapter) {
+ super.setAdapter(adapter);
+
+ if (mPopup != null) {
+ mPopup.setAdapter(new DropDownAdapter(adapter));
+ } else {
+ mTempAdapter = new DropDownAdapter(adapter);
+ }
+ }
+
+ @Override
+ public int getBaseline() {
+ View child = null;
+
+ if (getChildCount() > 0) {
+ child = getChildAt(0);
+ } else if (mAdapter != null && mAdapter.getCount() > 0) {
+ child = makeAndAddView(0);
+ mRecycler.put(0, child);
+ removeAllViewsInLayout();
+ }
+
+ if (child != null) {
+ final int childBaseline = child.getBaseline();
+ return childBaseline >= 0 ? child.getTop() + childBaseline : -1;
+ } else {
+ return -1;
+ }
+ }
+
+ @Override
+ protected void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+
+ if (mPopup != null && mPopup.isShowing()) {
+ mPopup.dismiss();
+ }
+ }
+
+ /**
+ * <p>A spinner does not support item click events. Calling this method
+ * will raise an exception.</p>
+ *
+ * @param l this listener will be ignored
+ */
+ @Override
+ public void setOnItemClickListener(OnItemClickListener l) {
+ throw new RuntimeException("setOnItemClickListener cannot be used with a spinner.");
+ }
+
+ @Override
+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+ if (mPopup != null && MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.AT_MOST) {
+ final int measuredWidth = getMeasuredWidth();
+ setMeasuredDimension(Math.min(Math.max(measuredWidth,
+ measureContentWidth(getAdapter(), getBackground())),
+ MeasureSpec.getSize(widthMeasureSpec)),
+ getMeasuredHeight());
+ }
+ }
+
+ /**
+ * @see android.view.View#onLayout(boolean,int,int,int,int)
+ *
+ * Creates and positions all views
+ *
+ */
+ @Override
+ protected void onLayout(boolean changed, int l, int t, int r, int b) {
+ super.onLayout(changed, l, t, r, b);
+ mInLayout = true;
+ layout(0, false);
+ mInLayout = false;
+ }
+
+ /**
+ * Creates and positions all views for this Spinner.
+ *
+ * @param delta Change in the selected position. +1 moves selection is moving to the right,
+ * so views are scrolling to the left. -1 means selection is moving to the left.
+ */
+ @Override
+ void layout(int delta, boolean animate) {
+ int childrenLeft = mSpinnerPadding.left;
+ int childrenWidth = getRight() - getLeft() - mSpinnerPadding.left - mSpinnerPadding.right;
+
+ if (mDataChanged) {
+ handleDataChanged();
+ }
+
+ // Handle the empty set by removing all views
+ if (mItemCount == 0) {
+ resetList();
+ return;
+ }
+
+ if (mNextSelectedPosition >= 0) {
+ setSelectedPositionInt(mNextSelectedPosition);
+ }
+
+ recycleAllViews();
+
+ // Clear out old views
+ removeAllViewsInLayout();
+
+ // Make selected view and position it
+ mFirstPosition = mSelectedPosition;
+ View sel = makeAndAddView(mSelectedPosition);
+ int width = sel.getMeasuredWidth();
+ int selectedOffset = childrenLeft;
+ switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
+ case Gravity.CENTER_HORIZONTAL:
+ selectedOffset = childrenLeft + (childrenWidth / 2) - (width / 2);
+ break;
+ case Gravity.RIGHT:
+ selectedOffset = childrenLeft + childrenWidth - width;
+ break;
+ }
+ sel.offsetLeftAndRight(selectedOffset);
+
+ // Flush any cached views that did not get reused above
+ mRecycler.clear();
+
+ invalidate();
+
+ checkSelectionChanged();
+
+ mDataChanged = false;
+ mNeedSync = false;
+ setNextSelectedPositionInt(mSelectedPosition);
+ }
+
+ /**
+ * Obtain a view, either by pulling an existing view from the recycler or
+ * by getting a new one from the adapter. If we are animating, make sure
+ * there is enough information in the view's layout parameters to animate
+ * from the old to new positions.
+ *
+ * @param position Position in the spinner for the view to obtain
+ * @return A view that has been added to the spinner
+ */
+ private View makeAndAddView(int position) {
+
+ View child;
+
+ if (!mDataChanged) {
+ child = mRecycler.get(position);
+ if (child != null) {
+ // Position the view
+ setUpChild(child);
+
+ return child;
+ }
+ }
+
+ // Nothing found in the recycler -- ask the adapter for a view
+ child = mAdapter.getView(position, null, this);
+
+ // Position the view
+ setUpChild(child);
+
+ return child;
+ }
+
+ /**
+ * Helper for makeAndAddView to set the position of a view
+ * and fill out its layout paramters.
+ *
+ * @param child The view to position
+ */
+ private void setUpChild(View child) {
+
+ // Respect layout params that are already in the view. Otherwise
+ // make some up...
+ ViewGroup.LayoutParams lp = child.getLayoutParams();
+ if (lp == null) {
+ lp = generateDefaultLayoutParams();
+ }
+
+ addViewInLayout(child, 0, lp);
+
+ child.setSelected(hasFocus());
+ if (mDisableChildrenWhenDisabled) {
+ child.setEnabled(isEnabled());
+ }
+
+ // Get measure specs
+ int childHeightSpec = ViewGroup.getChildMeasureSpec(mHeightMeasureSpec,
+ mSpinnerPadding.top + mSpinnerPadding.bottom, lp.height);
+ int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec,
+ mSpinnerPadding.left + mSpinnerPadding.right, lp.width);
+
+ // Measure child
+ child.measure(childWidthSpec, childHeightSpec);
+
+ int childLeft;
+ int childRight;
+
+ // Position vertically based on gravity setting
+ int childTop = mSpinnerPadding.top
+ + ((getMeasuredHeight() - mSpinnerPadding.bottom -
+ mSpinnerPadding.top - child.getMeasuredHeight()) / 2);
+ int childBottom = childTop + child.getMeasuredHeight();
+
+ int width = child.getMeasuredWidth();
+ childLeft = 0;
+ childRight = childLeft + width;
+
+ child.layout(childLeft, childTop, childRight, childBottom);
+ }
+
+ @Override
+ public boolean performClick() {
+ boolean handled = super.performClick();
+
+ if (!handled) {
+ handled = true;
+
+ if (!mPopup.isShowing()) {
+ mPopup.show();
+ }
+ }
+
+ return handled;
+ }
+
+ public void onClick(DialogInterface dialog, int which) {
+ setSelection(which);
+ dialog.dismiss();
+ }
+
+ /**
+ * Sets the prompt to display when the dialog is shown.
+ * @param prompt the prompt to set
+ */
+ public void setPrompt(CharSequence prompt) {
+ mPopup.setPromptText(prompt);
+ }
+
+ /**
+ * Sets the prompt to display when the dialog is shown.
+ * @param promptId the resource ID of the prompt to display when the dialog is shown
+ */
+ public void setPromptId(int promptId) {
+ setPrompt(getContext().getText(promptId));
+ }
+
+ /**
+ * @return The prompt to display when the dialog is shown
+ */
+ public CharSequence getPrompt() {
+ return mPopup.getHintText();
+ }
+
+ int measureContentWidth(SpinnerAdapter adapter, Drawable background) {
+ if (adapter == null) {
+ return 0;
+ }
+
+ int width = 0;
+ View itemView = null;
+ int itemType = 0;
+ final int widthMeasureSpec =
+ MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
+ final int heightMeasureSpec =
+ MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
+
+ // Make sure the number of items we'll measure is capped. If it's a huge data set
+ // with wildly varying sizes, oh well.
+ int start = Math.max(0, getSelectedItemPosition());
+ final int end = Math.min(adapter.getCount(), start + MAX_ITEMS_MEASURED);
+ final int count = end - start;
+ start = Math.max(0, start - (MAX_ITEMS_MEASURED - count));
+ for (int i = start; i < end; i++) {
+ final int positionType = adapter.getItemViewType(i);
+ if (positionType != itemType) {
+ itemType = positionType;
+ itemView = null;
+ }
+ itemView = adapter.getView(i, itemView, this);
+ if (itemView.getLayoutParams() == null) {
+ itemView.setLayoutParams(new ViewGroup.LayoutParams(
+ ViewGroup.LayoutParams.WRAP_CONTENT,
+ ViewGroup.LayoutParams.WRAP_CONTENT));
+ }
+ itemView.measure(widthMeasureSpec, heightMeasureSpec);
+ width = Math.max(width, itemView.getMeasuredWidth());
+ }
+
+ // Add background padding to measured width
+ if (background != null) {
+ background.getPadding(mTempRect);
+ width += mTempRect.left + mTempRect.right;
+ }
+
+ return width;
+ }
+
+ /**
+ * <p>Wrapper class for an Adapter. Transforms the embedded Adapter instance
+ * into a ListAdapter.</p>
+ */
+ private static class DropDownAdapter implements ListAdapter, SpinnerAdapter {
+ private SpinnerAdapter mAdapter;
+ private ListAdapter mListAdapter;
+
+ /**
+ * <p>Creates a new ListAdapter wrapper for the specified adapter.</p>
+ *
+ * @param adapter the Adapter to transform into a ListAdapter
+ */
+ public DropDownAdapter(SpinnerAdapter adapter) {
+ this.mAdapter = adapter;
+ if (adapter instanceof ListAdapter) {
+ this.mListAdapter = (ListAdapter) adapter;
+ }
+ }
+
+ public int getCount() {
+ return mAdapter == null ? 0 : mAdapter.getCount();
+ }
+
+ public Object getItem(int position) {
+ return mAdapter == null ? null : mAdapter.getItem(position);
+ }
+
+ public long getItemId(int position) {
+ return mAdapter == null ? -1 : mAdapter.getItemId(position);
+ }
+
+ public View getView(int position, View convertView, ViewGroup parent) {
+ return getDropDownView(position, convertView, parent);
+ }
+
+ public View getDropDownView(int position, View convertView, ViewGroup parent) {
+ return mAdapter == null ? null :
+ mAdapter.getDropDownView(position, convertView, parent);
+ }
+
+ public boolean hasStableIds() {
+ return mAdapter != null && mAdapter.hasStableIds();
+ }
+
+ public void registerDataSetObserver(DataSetObserver observer) {
+ if (mAdapter != null) {
+ mAdapter.registerDataSetObserver(observer);
+ }
+ }
+
+ public void unregisterDataSetObserver(DataSetObserver observer) {
+ if (mAdapter != null) {
+ mAdapter.unregisterDataSetObserver(observer);
+ }
+ }
+
+ /**
+ * If the wrapped SpinnerAdapter is also a ListAdapter, delegate this call.
+ * Otherwise, return true.
+ */
+ public boolean areAllItemsEnabled() {
+ final ListAdapter adapter = mListAdapter;
+ if (adapter != null) {
+ return adapter.areAllItemsEnabled();
+ } else {
+ return true;
+ }
+ }
+
+ /**
+ * If the wrapped SpinnerAdapter is also a ListAdapter, delegate this call.
+ * Otherwise, return true.
+ */
+ public boolean isEnabled(int position) {
+ final ListAdapter adapter = mListAdapter;
+ if (adapter != null) {
+ return adapter.isEnabled(position);
+ } else {
+ return true;
+ }
+ }
+
+ public int getItemViewType(int position) {
+ return 0;
+ }
+
+ public int getViewTypeCount() {
+ return 1;
+ }
+
+ public boolean isEmpty() {
+ return getCount() == 0;
+ }
+ }
+
+ /**
+ * Implements some sort of popup selection interface for selecting a spinner option.
+ * Allows for different spinner modes.
+ */
+ private interface SpinnerPopup {
+ public void setAdapter(ListAdapter adapter);
+
+ /**
+ * Show the popup
+ */
+ public void show();
+
+ /**
+ * Dismiss the popup
+ */
+ public void dismiss();
+
+ /**
+ * @return true if the popup is showing, false otherwise.
+ */
+ public boolean isShowing();
+
+ /**
+ * Set hint text to be displayed to the user. This should provide
+ * a description of the choice being made.
+ * @param hintText Hint text to set.
+ */
+ public void setPromptText(CharSequence hintText);
+ public CharSequence getHintText();
+ }
+
+ /*
+ private class DialogPopup implements SpinnerPopup, DialogInterface.OnClickListener {
+ private AlertDialog mPopup;
+ private ListAdapter mListAdapter;
+ private CharSequence mPrompt;
+
+ public void dismiss() {
+ mPopup.dismiss();
+ mPopup = null;
+ }
+
+ public boolean isShowing() {
+ return mPopup != null ? mPopup.isShowing() : false;
+ }
+
+ public void setAdapter(ListAdapter adapter) {
+ mListAdapter = adapter;
+ }
+
+ public void setPromptText(CharSequence hintText) {
+ mPrompt = hintText;
+ }
+
+ public CharSequence getHintText() {
+ return mPrompt;
+ }
+
+ public void show() {
+ AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
+ if (mPrompt != null) {
+ builder.setTitle(mPrompt);
+ }
+ mPopup = builder.setSingleChoiceItems(mListAdapter,
+ getSelectedItemPosition(), this).show();
+ }
+
+ public void onClick(DialogInterface dialog, int which) {
+ setSelection(which);
+ dismiss();
+ }
+ }
+ */
+
+ private class DropdownPopup extends IcsListPopupWindow implements SpinnerPopup {
+ private CharSequence mHintText;
+ private ListAdapter mAdapter;
+
+ public DropdownPopup(Context context, AttributeSet attrs, int defStyleRes) {
+ super(context, attrs, 0, defStyleRes);
+
+ setAnchorView(IcsSpinner.this);
+ setModal(true);
+ setPromptPosition(POSITION_PROMPT_ABOVE);
+ setOnItemClickListener(new OnItemClickListener() {
+ @SuppressWarnings("rawtypes")
+ public void onItemClick(AdapterView parent, View v, int position, long id) {
+ IcsSpinner.this.setSelection(position);
+ dismiss();
+ }
+ });
+ }
+
+ @Override
+ public void setAdapter(ListAdapter adapter) {
+ super.setAdapter(adapter);
+ mAdapter = adapter;
+ }
+
+ public CharSequence getHintText() {
+ return mHintText;
+ }
+
+ public void setPromptText(CharSequence hintText) {
+ // Hint text is ignored for dropdowns, but maintain it here.
+ mHintText = hintText;
+ }
+
+ @Override
+ public void show() {
+ final int spinnerPaddingLeft = IcsSpinner.this.getPaddingLeft();
+ if (mDropDownWidth == WRAP_CONTENT) {
+ final int spinnerWidth = IcsSpinner.this.getWidth();
+ final int spinnerPaddingRight = IcsSpinner.this.getPaddingRight();
+ setContentWidth(Math.max(
+ measureContentWidth((SpinnerAdapter) mAdapter, getBackground()),
+ spinnerWidth - spinnerPaddingLeft - spinnerPaddingRight));
+ } else if (mDropDownWidth == MATCH_PARENT) {
+ final int spinnerWidth = IcsSpinner.this.getWidth();
+ final int spinnerPaddingRight = IcsSpinner.this.getPaddingRight();
+ setContentWidth(spinnerWidth - spinnerPaddingLeft - spinnerPaddingRight);
+ } else {
+ setContentWidth(mDropDownWidth);
+ }
+ final Drawable background = getBackground();
+ int bgOffset = 0;
+ if (background != null) {
+ background.getPadding(mTempRect);
+ bgOffset = -mTempRect.left;
+ }
+ setHorizontalOffset(bgOffset + spinnerPaddingLeft);
+ setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
+ super.show();
+ getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
+ setSelection(IcsSpinner.this.getSelectedItemPosition());
+ }
+ }
+}
projects / debian / openrocket / blobdiff