Example usage for android.widget ListAdapter isEnabled

Introduction

In this page you can find the example usage for android.widget ListAdapter isEnabled.

Prototype

boolean isEnabled(int position);

Source Link

Document

Returns true if the item at the specified position is not a separator.

Usage

From source file:com.huewu.pla.lib.internal.PLA_ListView.java

@Override
protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
    super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

    if (DEBUG)/*w  ww  .j av a 2 s  .  co m*/
        Log.v("PLA_ListView", "onFocusChanged");

    int closetChildIndex = -1;
    if (gainFocus && previouslyFocusedRect != null) {
        // previouslyFocusedRect.offset(mScrollX, mScrollY);
        previouslyFocusedRect.offset(getScrollX(), getScrollY());

        final ListAdapter adapter = mAdapter;
        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();
        }

        // figure out which item should be selected based on previously
        // focused rect
        Rect otherRect = mTempRect;
        int minDistance = Integer.MAX_VALUE;
        final int childCount = getChildCount();
        final int firstPosition = mFirstPosition;

        for (int i = 0; i < childCount; i++) {
            // only consider selectable views
            if (!adapter.isEnabled(firstPosition + i)) {
                continue;
            }

            View other = getChildAt(i);
            other.getDrawingRect(otherRect);
            offsetDescendantRectToMyCoords(other, otherRect);
            int distance = getDistance(previouslyFocusedRect, otherRect, direction);

            if (distance < minDistance) {
                minDistance = distance;
                closetChildIndex = i;
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelection(closetChildIndex + mFirstPosition);
    } else {
        requestLayout();
    }
}

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From source file:org.bangbang.support.v4.widget.HListView.java

/**
     * @param direction either {@link android.view.View#FOCUS_UP} or
     *        {@link android.view.View#FOCUS_DOWN}.
     * @return The position of the next selectable position of the views that
     *         are currently visible, taking into account the fact that there might
     *         be no selection.  Returns {@link #INVALID_POSITION} if there is no
     *         selectable view on screen in the given direction.
     *//*w ww  .  ja v a 2  s. c  om*/
    private int lookForSelectablePositionOnScreen(int direction) {
        final int firstPosition = mFirstPosition;
        if (direction == View.FOCUS_RIGHT) {
            int startPos = (mSelectedPosition != INVALID_POSITION) ? mSelectedPosition + 1 : firstPosition;
            if (startPos >= mAdapter.getCount()) {
                return INVALID_POSITION;
            }
            if (startPos < firstPosition) {
                startPos = firstPosition;
            }

            final int lastVisiblePos = getLastVisiblePosition();
            final ListAdapter adapter = getAdapter();
            for (int pos = startPos; pos <= lastVisiblePos; pos++) {
                if (adapter.isEnabled(pos) && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) {
                    return pos;
                }
            }
        } else {
            int last = firstPosition + getChildCount() - 1;
            int startPos = (mSelectedPosition != INVALID_POSITION) ? mSelectedPosition - 1
                    : firstPosition + getChildCount() - 1;
            if (startPos < 0) {
                return INVALID_POSITION;
            }
            if (startPos > last) {
                startPos = last;
            }

            final ListAdapter adapter = getAdapter();
            for (int pos = startPos; pos >= firstPosition; pos--) {
                if (adapter.isEnabled(pos) && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) {
                    return pos;
                }
            }
        }
        return INVALID_POSITION;
    }

---

From source file:org.bangbang.support.v4.widget.HListView.java

@Override
    protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
        super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

        int closetChildIndex = -1;
        if (gainFocus && previouslyFocusedRect != null) {
            previouslyFocusedRect.offset(getScrollX(), getScrollY());

            // figure out which item should be selected based on previously
            // focused rect
            Rect otherRect = mTempRect;/*from w w w .  j  av a 2  s .c om*/
            int minDistance = Integer.MAX_VALUE;
            final int childCount = getChildCount();
            final int firstPosition = mFirstPosition;
            final ListAdapter adapter = mAdapter;

            for (int i = 0; i < childCount; i++) {
                // only consider selectable views
                if (!adapter.isEnabled(firstPosition + i)) {
                    continue;
                }

                View other = getChildAt(i);
                other.getDrawingRect(otherRect);
                offsetDescendantRectToMyCoords(other, otherRect);
                int distance = getDistance(previouslyFocusedRect, otherRect, direction);

                if (distance < minDistance) {
                    minDistance = distance;
                    closetChildIndex = i;
                }
            }
        }

        if (closetChildIndex >= 0) {
            setSelection(closetChildIndex + mFirstPosition);
        } else {
            requestLayout();
        }
    }

---

From source file:org.bangbang.support.v4.widget.HListView.java

@Override
    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
        boolean populated = super.dispatchPopulateAccessibilityEvent(event);

        // If the item count is less than 15 then subtract disabled items from the count and
        // position. Otherwise ignore disabled items.
        if (!populated) {
            int itemCount = 0;
            int currentItemIndex = getSelectedItemPosition();

            ListAdapter adapter = getAdapter();
            if (adapter != null) {
                final int count = adapter.getCount();
                if (count < 15) {
                    for (int i = 0; i < count; i++) {
                        if (adapter.isEnabled(i)) {
                            itemCount++;
                        } else if (i <= currentItemIndex) {
                            currentItemIndex--;
                        }//from  w  w  w  . j a  va2  s .  c o  m
                    }
                } else {
                    itemCount = count;
                }
            }

            event.setItemCount(itemCount);
            event.setCurrentItemIndex(currentItemIndex);
        }

        return populated;
    }

---

From source file:com.appunite.list.HorizontalListView.java

/**
 * @param direction either {@link android.view.View#FOCUS_UP} or
 *        {@link android.view.View#FOCUS_DOWN}.
 * @return The position of the next selectable position of the views that
 *         are currently visible, taking into account the fact that there might
 *         be no selection.  Returns {@link #INVALID_POSITION} if there is no
 *         selectable view on screen in the given direction.
 *//*from  w  w  w.  j a v  a 2 s. c  o  m*/
private int lookForSelectablePositionOnScreen(int direction) {
    final int firstPosition = mFirstPosition;
    if (direction == View.FOCUS_DOWN) {
        int startPos = (mSelectedPosition != INVALID_POSITION) ? mSelectedPosition + 1 : firstPosition;
        if (startPos >= mAdapter.getCount()) {
            return INVALID_POSITION;
        }
        if (startPos < firstPosition) {
            startPos = firstPosition;
        }

        final int lastVisiblePos = getLastVisiblePosition();
        final ListAdapter adapter = getAdapter();
        for (int pos = startPos; pos <= lastVisiblePos; pos++) {
            if (adapter.isEnabled(pos) && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) {
                return pos;
            }
        }
    } else {
        int last = firstPosition + getChildCount() - 1;
        int startPos = (mSelectedPosition != INVALID_POSITION) ? mSelectedPosition - 1
                : firstPosition + getChildCount() - 1;
        if (startPos < 0 || startPos >= mAdapter.getCount()) {
            return INVALID_POSITION;
        }
        if (startPos > last) {
            startPos = last;
        }

        final ListAdapter adapter = getAdapter();
        for (int pos = startPos; pos >= firstPosition; pos--) {
            if (adapter.isEnabled(pos) && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) {
                return pos;
            }
        }
    }
    return INVALID_POSITION;
}

---

From source file:org.bangbang.support.v4.widget.HListView.java

/**
     * Find a position that can be selected (i.e., is not a separator).
     */*from  www  .j  a  va  2  s. c  o  m*/
     * @param position The starting position to look at.
     * @param lookDown Whether to look down for other positions.
     * @return The next selectable position starting at position and then searching either up or
     *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
     */
    @Override
    int lookForSelectablePosition(int position, boolean lookDown) {
        final ListAdapter adapter = mAdapter;
        if (adapter == null || isInTouchMode()) {
            return INVALID_POSITION;
        }

        final int count = adapter.getCount();
        if (!mAreAllItemsSelectable) {
            if (lookDown) {
                position = Math.max(0, position);
                while (position < count && !adapter.isEnabled(position)) {
                    position++;
                }
            } else {
                position = Math.min(position, count - 1);
                while (position >= 0 && !adapter.isEnabled(position)) {
                    position--;
                }
            }

            if (position < 0 || position >= count) {
                return INVALID_POSITION;
            }
            return position;
        } else {
            if (position < 0 || position >= count) {
                return INVALID_POSITION;
            }
            return position;
        }
    }

---

From source file:com.appunite.list.HorizontalListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 *
 * @param position The starting position to look at.
 * @param lookRight Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or
 *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
 *///from w ww. ja va 2s  . co m
@Override
int lookForSelectablePosition(int position, boolean lookRight) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookRight) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.awrtechnologies.carbudgetsales.hlistview.widget.HListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 * /*  w w  w . j a  va2 s .c  o m*/
 * @param position
 *           The starting position to look at.
 * @param lookDown
 *           Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or down. Returns
 *         {@link #INVALID_POSITION} if nothing can be found.
 */
@Override
protected int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.appunite.list.ListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 *
 * @param position The starting position to look at.
 * @param lookDown Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or
 *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
 *///from w  w w .j a  v a  2  s. c o m
@Override
int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }

        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    } else {
        if (position < 0 || position >= count) {
            return INVALID_POSITION;
        }
        return position;
    }
}

---

From source file:com.awrtechnologies.carbudgetsales.hlistview.widget.HListView.java

@Override
protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
    super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

    final ListAdapter adapter = mAdapter;
    int closetChildIndex = -1;
    int closestChildLeft = 0;
    if (adapter != null && gainFocus && previouslyFocusedRect != null) {
        previouslyFocusedRect.offset(getScrollX(), getScrollY());

        // Don't cache the result of getChildCount or mFirstPosition here,
        // it could change in layoutChildren.
        if (adapter.getCount() < getChildCount() + mFirstPosition) {
            mLayoutMode = LAYOUT_NORMAL;
            layoutChildren();// w ww  .  j a v  a 2 s.c o m
        }

        // figure out which item should be selected based on previously
        // focused rect
        Rect otherRect = mTempRect;
        int minDistance = Integer.MAX_VALUE;
        final int childCount = getChildCount();
        final int firstPosition = mFirstPosition;

        for (int i = 0; i < childCount; i++) {
            // only consider selectable views
            if (!adapter.isEnabled(firstPosition + i)) {
                continue;
            }

            View other = getChildAt(i);
            other.getDrawingRect(otherRect);
            offsetDescendantRectToMyCoords(other, otherRect);
            int distance = getDistance(previouslyFocusedRect, otherRect, direction);

            if (distance < minDistance) {
                minDistance = distance;
                closetChildIndex = i;
                closestChildLeft = other.getLeft();
            }
        }
    }

    if (closetChildIndex >= 0) {
        setSelectionFromLeft(closetChildIndex + mFirstPosition, closestChildLeft);
    } else {
        requestLayout();
    }
}

---

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