Examples with PositionMetadata android.widget.ExpandableListConnector.PositionMetadata used on opensource projects

Example 41 with PositionMetadata

use of android.widget.ExpandableListConnector.PositionMetadata in project android_frameworks_base by ParanoidAndroid.

the class ExpandableListView method getExpandableListPosition.

/**
     * Converts a flat list position (the raw position of an item (child or group)
     * in the list) to a group and/or child position (represented in a
     * packed position). This is useful in situations where the caller needs to
     * use the underlying {@link ListView}'s methods. Use
     * {@link ExpandableListView#getPackedPositionType} ,
     * {@link ExpandableListView#getPackedPositionChild},
     * {@link ExpandableListView#getPackedPositionGroup} to unpack.
     * 
     * @param flatListPosition The flat list position to be converted.
     * @return The group and/or child position for the given flat list position
     *         in packed position representation. #PACKED_POSITION_VALUE_NULL if
     *         the position corresponds to a header or a footer item.
     */
public long getExpandableListPosition(int flatListPosition) {
    if (isHeaderOrFooterPosition(flatListPosition)) {
        return PACKED_POSITION_VALUE_NULL;
    }
    final int adjustedPosition = getFlatPositionForConnector(flatListPosition);
    PositionMetadata pm = mConnector.getUnflattenedPos(adjustedPosition);
    long packedPos = pm.position.getPackedPosition();
    pm.recycle();
    return packedPos;
}

Example 42 with PositionMetadata

use of android.widget.ExpandableListConnector.PositionMetadata in project android_frameworks_base by ParanoidAndroid.

the class ExpandableListView method drawDivider.

@Override
void drawDivider(Canvas canvas, Rect bounds, int childIndex) {
    int flatListPosition = childIndex + mFirstPosition;
    // all items, then the item below it has to be a group)
    if (flatListPosition >= 0) {
        final int adjustedPosition = getFlatPositionForConnector(flatListPosition);
        PositionMetadata pos = mConnector.getUnflattenedPos(adjustedPosition);
        // If this item is a child, or it is a non-empty group that is expanded
        if ((pos.position.type == ExpandableListPosition.CHILD) || (pos.isExpanded() && pos.groupMetadata.lastChildFlPos != pos.groupMetadata.flPos)) {
            // These are the cases where we draw the child divider
            final Drawable divider = mChildDivider;
            divider.setBounds(bounds);
            divider.draw(canvas);
            pos.recycle();
            return;
        }
        pos.recycle();
    }
    // Otherwise draw the default divider
    super.drawDivider(canvas, bounds, flatListPosition);
}

Example 43 with PositionMetadata

use of android.widget.ExpandableListConnector.PositionMetadata in project android_frameworks_base by ParanoidAndroid.

the class ExpandableListView method setSelectedChild.

/**
     * Sets the selection to the specified child. If the child is in a collapsed
     * group, the group will only be expanded and child subsequently selected if
     * shouldExpandGroup is set to true, otherwise the method will return false.
     * 
     * @param groupPosition The position of the group that contains the child.
     * @param childPosition The position of the child within the group.
     * @param shouldExpandGroup Whether the child's group should be expanded if
     *            it is collapsed.
     * @return Whether the selection was successfully set on the child.
     */
public boolean setSelectedChild(int groupPosition, int childPosition, boolean shouldExpandGroup) {
    ExpandableListPosition elChildPos = ExpandableListPosition.obtainChildPosition(groupPosition, childPosition);
    PositionMetadata flatChildPos = mConnector.getFlattenedPos(elChildPos);
    if (flatChildPos == null) {
        // Shouldn't expand the group, so return false for we didn't set the selection
        if (!shouldExpandGroup)
            return false;
        expandGroup(groupPosition);
        flatChildPos = mConnector.getFlattenedPos(elChildPos);
        // Sanity check
        if (flatChildPos == null) {
            throw new IllegalStateException("Could not find child");
        }
    }
    int absoluteFlatPosition = getAbsoluteFlatPosition(flatChildPos.position.flatListPos);
    super.setSelection(absoluteFlatPosition);
    elChildPos.recycle();
    flatChildPos.recycle();
    return true;
}

Example 44 with PositionMetadata

use of android.widget.ExpandableListConnector.PositionMetadata in project XobotOS by xamarin.

the class ExpandableListView method dispatchDraw.

@Override
protected void dispatchDraw(Canvas canvas) {
    // Draw children, etc.
    super.dispatchDraw(canvas);
    // If we have any indicators to draw, we do it here
    if ((mChildIndicator == null) && (mGroupIndicator == null)) {
        return;
    }
    int saveCount = 0;
    final boolean clipToPadding = (mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK;
    if (clipToPadding) {
        saveCount = canvas.save();
        final int scrollX = mScrollX;
        final int scrollY = mScrollY;
        canvas.clipRect(scrollX + mPaddingLeft, scrollY + mPaddingTop, scrollX + mRight - mLeft - mPaddingRight, scrollY + mBottom - mTop - mPaddingBottom);
    }
    final int headerViewsCount = getHeaderViewsCount();
    final int lastChildFlPos = mItemCount - getFooterViewsCount() - headerViewsCount - 1;
    final int myB = mBottom;
    PositionMetadata pos;
    View item;
    Drawable indicator;
    int t, b;
    // Start at a value that is neither child nor group
    int lastItemType = ~(ExpandableListPosition.CHILD | ExpandableListPosition.GROUP);
    final Rect indicatorRect = mIndicatorRect;
    // The "child" mentioned in the following two lines is this
    // View's child, not referring to an expandable list's
    // notion of a child (as opposed to a group)
    final int childCount = getChildCount();
    for (int i = 0, childFlPos = mFirstPosition - headerViewsCount; i < childCount; i++, childFlPos++) {
        if (childFlPos < 0) {
            // This child is header
            continue;
        } else if (childFlPos > lastChildFlPos) {
            // This child is footer, so are all subsequent children
            break;
        }
        item = getChildAt(i);
        t = item.getTop();
        b = item.getBottom();
        // This item isn't on the screen
        if ((b < 0) || (t > myB))
            continue;
        // Get more expandable list-related info for this item
        pos = mConnector.getUnflattenedPos(childFlPos);
        // the left & right bounds
        if (pos.position.type != lastItemType) {
            if (pos.position.type == ExpandableListPosition.CHILD) {
                indicatorRect.left = (mChildIndicatorLeft == CHILD_INDICATOR_INHERIT) ? mIndicatorLeft : mChildIndicatorLeft;
                indicatorRect.right = (mChildIndicatorRight == CHILD_INDICATOR_INHERIT) ? mIndicatorRight : mChildIndicatorRight;
            } else {
                indicatorRect.left = mIndicatorLeft;
                indicatorRect.right = mIndicatorRight;
            }
            indicatorRect.left += mPaddingLeft;
            indicatorRect.right += mPaddingLeft;
            lastItemType = pos.position.type;
        }
        if (indicatorRect.left != indicatorRect.right) {
            // Use item's full height + the divider height
            if (mStackFromBottom) {
                // See ListView#dispatchDraw
                // - mDividerHeight;
                indicatorRect.top = t;
                indicatorRect.bottom = b;
            } else {
                indicatorRect.top = t;
                // + mDividerHeight;
                indicatorRect.bottom = b;
            }
            // Get the indicator (with its state set to the item's state)
            indicator = getIndicator(pos);
            if (indicator != null) {
                // Draw the indicator
                indicator.setBounds(indicatorRect);
                indicator.draw(canvas);
            }
        }
        pos.recycle();
    }
    if (clipToPadding) {
        canvas.restoreToCount(saveCount);
    }
}

Example 45 with PositionMetadata

use of android.widget.ExpandableListConnector.PositionMetadata in project XobotOS by xamarin.

the class ExpandableListView method expandGroup.

/**
     * Expand a group in the grouped list view
     *
     * @param groupPos the group to be expanded
     * @param animate true if the expanding group should be animated in
     * @return True if the group was expanded, false otherwise (if the group
     *         was already expanded, this will return false)
     */
public boolean expandGroup(int groupPos, boolean animate) {
    PositionMetadata pm = mConnector.getFlattenedPos(ExpandableListPosition.obtain(ExpandableListPosition.GROUP, groupPos, -1, -1));
    boolean retValue = mConnector.expandGroup(pm);
    if (mOnGroupExpandListener != null) {
        mOnGroupExpandListener.onGroupExpand(groupPos);
    }
    if (animate) {
        final int groupFlatPos = pm.position.flatListPos;
        final int shiftedGroupPosition = groupFlatPos + getHeaderViewsCount();
        smoothScrollToPosition(shiftedGroupPosition + mAdapter.getChildrenCount(groupPos), shiftedGroupPosition);
    }
    pm.recycle();
    return retValue;
}