Example usage for android.view FocusFinder getInstance

Introduction

In this page you can find the example usage for android.view FocusFinder getInstance.

Prototype

public static FocusFinder getInstance() 

Source Link

Document

Get the focus finder for this thread.

Usage

From source file:com.aliasapps.seq.scroller.TwoWayView.java

/**
 * Do an arrow scroll based on focus searching.  If a new view is
 * given focus, return the selection delta and amount to scroll via
 * an {@link ArrowScrollFocusResult}, otherwise, return null.
 *
 * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} or
 *        {@link View#FOCUS_LEFT} or {@link View#FOCUS_RIGHT} depending on the
 *        current view orientation.//w w  w.  ja  v a 2 s  .  c om
 *
 * @return The result if focus has changed, or <code>null</code>.
 */
private ArrowScrollFocusResult arrowScrollFocused(final int direction) {
    forceValidFocusDirection(direction);

    final View selectedView = getSelectedView();
    final View newFocus;
    final int searchPoint;

    if (selectedView != null && selectedView.hasFocus()) {
        View oldFocus = selectedView.findFocus();
        newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction);
    } else {
        if (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT) {
            final int start = (mIsVertical ? getPaddingTop() : getPaddingLeft());

            final int selectedStart;
            if (selectedView != null) {
                selectedStart = (mIsVertical ? selectedView.getTop() : selectedView.getLeft());
            } else {
                selectedStart = start;
            }

            searchPoint = Math.max(selectedStart, start);
        } else {
            final int end = (mIsVertical ? getHeight() - getPaddingBottom() : getWidth() - getPaddingRight());

            final int selectedEnd;
            if (selectedView != null) {
                selectedEnd = (mIsVertical ? selectedView.getBottom() : selectedView.getRight());
            } else {
                selectedEnd = end;
            }

            searchPoint = Math.min(selectedEnd, end);
        }

        final int x = (mIsVertical ? 0 : searchPoint);
        final int y = (mIsVertical ? searchPoint : 0);
        mTempRect.set(x, y, x, y);

        newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction);
    }

    if (newFocus != null) {
        final int positionOfNewFocus = positionOfNewFocus(newFocus);

        // If the focus change is in a different new position, make sure
        // we aren't jumping over another selectable position.
        if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) {
            final int selectablePosition = lookForSelectablePositionOnScreen(direction);

            final boolean movingForward = (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT);
            final boolean movingBackward = (direction == View.FOCUS_UP || direction == View.FOCUS_LEFT);

            if (selectablePosition != INVALID_POSITION
                    && ((movingForward && selectablePosition < positionOfNewFocus)
                            || (movingBackward && selectablePosition > positionOfNewFocus))) {
                return null;
            }
        }

        int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus);

        final int maxScrollAmount = getMaxScrollAmount();
        if (focusScroll < maxScrollAmount) {
            // Not moving too far, safe to give next view focus
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll);
            return mArrowScrollFocusResult;
        } else if (distanceToView(newFocus) < maxScrollAmount) {
            // Case to consider:
            // Too far to get entire next focusable on screen, but by going
            // max scroll amount, we are getting it at least partially in view,
            // so give it focus and scroll the max amount.
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount);
            return mArrowScrollFocusResult;
        }
    }

    return null;
}

---

From source file:com.boutline.sports.helpers.TwoWayView.java

/**
 * Do an arrow scroll based on focus searching.  If a new view is
 * given focus, return the selection delta and amount to scroll via
 * an {@link ArrowScrollFocusResult}, otherwise, return null.
 *
 * @param direction either {@link android.view.View#FOCUS_UP} or {@link android.view.View#FOCUS_DOWN} or
 *        {@link android.view.View#FOCUS_LEFT} or {@link android.view.View#FOCUS_RIGHT} depending on the
 *        current view orientation.//from   www. j a va2 s  .  co  m
 *
 * @return The result if focus has changed, or <code>null</code>.
 */
private ArrowScrollFocusResult arrowScrollFocused(final int direction) {
    forceValidFocusDirection(direction);

    final View selectedView = getSelectedView();
    final View newFocus;
    final int searchPoint;

    if (selectedView != null && selectedView.hasFocus()) {
        View oldFocus = selectedView.findFocus();
        newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction);
    } else {
        if (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT) {
            final int start = getStartEdge();

            final int selectedStart;
            if (selectedView != null) {
                selectedStart = (mIsVertical ? selectedView.getTop() : selectedView.getLeft());
            } else {
                selectedStart = start;
            }

            searchPoint = Math.max(selectedStart, start);
        } else {
            final int end = getEndEdge();

            final int selectedEnd;
            if (selectedView != null) {
                selectedEnd = getChildEndEdge(selectedView);
            } else {
                selectedEnd = end;
            }

            searchPoint = Math.min(selectedEnd, end);
        }

        final int x = (mIsVertical ? 0 : searchPoint);
        final int y = (mIsVertical ? searchPoint : 0);
        mTempRect.set(x, y, x, y);

        newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction);
    }

    if (newFocus != null) {
        final int positionOfNewFocus = positionOfNewFocus(newFocus);

        // If the focus change is in a different new position, make sure
        // we aren't jumping over another selectable position.
        if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) {
            final int selectablePosition = lookForSelectablePositionOnScreen(direction);

            final boolean movingForward = (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT);
            final boolean movingBackward = (direction == View.FOCUS_UP || direction == View.FOCUS_LEFT);

            if (selectablePosition != INVALID_POSITION
                    && ((movingForward && selectablePosition < positionOfNewFocus)
                            || (movingBackward && selectablePosition > positionOfNewFocus))) {
                return null;
            }
        }

        int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus);

        final int maxScrollAmount = getMaxScrollAmount();
        if (focusScroll < maxScrollAmount) {
            // Not moving too far, safe to give next view focus
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll);
            return mArrowScrollFocusResult;
        } else if (distanceToView(newFocus) < maxScrollAmount) {
            // Case to consider:
            // Too far to get entire next focusable on screen, but by going
            // max scroll amount, we are getting it at least partially in view,
            // so give it focus and scroll the max amount.
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount);
            return mArrowScrollFocusResult;
        }
    }

    return null;
}

---

From source file:com.artifex.mupdf.view.ThumbnailViews.java

/**
 * Do an arrow scroll based on focus searching. If a new view is given
 * focus, return the selection delta and amount to scroll via an
 * {@link ArrowScrollFocusResult}, otherwise, return null.
 * //from  w  w w.j  ava  2s .c  om
 * @param direction
 *            either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} or
 *            {@link View#FOCUS_LEFT} or {@link View#FOCUS_RIGHT} depending
 *            on the current view orientation.
 * 
 * @return The result if focus has changed, or <code>null</code>.
 */
private ArrowScrollFocusResult arrowScrollFocused(final int direction) {
    forceValidFocusDirection(direction);

    final View selectedView = getSelectedView();
    final View newFocus;
    final int searchPoint;

    if (selectedView != null && selectedView.hasFocus()) {
        View oldFocus = selectedView.findFocus();
        newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction);
    } else {
        if (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT) {
            final int start = (mIsVertical ? getPaddingTop() : getPaddingLeft());

            final int selectedStart;
            if (selectedView != null) {
                selectedStart = (mIsVertical ? selectedView.getTop() : selectedView.getLeft());
            } else {
                selectedStart = start;
            }

            searchPoint = Math.max(selectedStart, start);
        } else {
            final int end = (mIsVertical ? getHeight() - getPaddingBottom() : getWidth() - getPaddingRight());

            final int selectedEnd;
            if (selectedView != null) {
                selectedEnd = (mIsVertical ? selectedView.getBottom() : selectedView.getRight());
            } else {
                selectedEnd = end;
            }

            searchPoint = Math.min(selectedEnd, end);
        }

        final int x = (mIsVertical ? 0 : searchPoint);
        final int y = (mIsVertical ? searchPoint : 0);
        mTempRect.set(x, y, x, y);

        newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction);
    }

    if (newFocus != null) {
        final int positionOfNewFocus = positionOfNewFocus(newFocus);

        // If the focus change is in a different new position, make sure
        // we aren't jumping over another selectable position.
        if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) {
            final int selectablePosition = lookForSelectablePositionOnScreen(direction);

            final boolean movingForward = (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT);
            final boolean movingBackward = (direction == View.FOCUS_UP || direction == View.FOCUS_LEFT);

            if (selectablePosition != INVALID_POSITION
                    && ((movingForward && selectablePosition < positionOfNewFocus)
                            || (movingBackward && selectablePosition > positionOfNewFocus))) {
                return null;
            }
        }

        int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus);

        final int maxScrollAmount = getMaxScrollAmount();
        if (focusScroll < maxScrollAmount) {
            // Not moving too far, safe to give next view focus
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll);
            return mArrowScrollFocusResult;
        } else if (distanceToView(newFocus) < maxScrollAmount) {
            // Case to consider:
            // Too far to get entire next focusable on screen, but by going
            // max scroll amount, we are getting it at least partially in
            // view,
            // so give it focus and scroll the max amount.
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount);
            return mArrowScrollFocusResult;
        }
    }

    return null;
}

---

From source file:com.artifex.mupdflib.TwoWayView.java

/**
 * Do an arrow scroll based on focus searching.  If a new view is
 * given focus, return the selection delta and amount to scroll via
 * an {@link ArrowScrollFocusResult}, otherwise, return null.
 *
 * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} or
 *        {@link View#FOCUS_LEFT} or {@link View#FOCUS_RIGHT} depending on the
 *        current view orientation.//  w w  w  .  j  a  va  2 s.c  o m
 *
 * @return The result if focus has changed, or <code>null</code>.
 */
private ArrowScrollFocusResult arrowScrollFocused(final int direction) {
    forceValidFocusDirection(direction);

    final View selectedView = getSelectedView();
    final View newFocus;
    final int searchPoint;

    if (selectedView != null && selectedView.hasFocus()) {
        View oldFocus = selectedView.findFocus();
        newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction);
    } else {
        if (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT) {
            boolean fadingEdgeShowing = (mFirstPosition > 0);
            final int start = getStartEdge() + (fadingEdgeShowing ? getArrowScrollPreviewLength() : 0);

            final int selectedStart;
            if (selectedView != null) {
                selectedStart = getChildStartEdge(selectedView);
            } else {
                selectedStart = start;
            }

            searchPoint = Math.max(selectedStart, start);
        } else {
            final boolean fadingEdgeShowing = (mFirstPosition + getChildCount() - 1) < mItemCount;
            final int end = getEndEdge() - (fadingEdgeShowing ? getArrowScrollPreviewLength() : 0);

            final int selectedEnd;
            if (selectedView != null) {
                selectedEnd = getChildEndEdge(selectedView);
            } else {
                selectedEnd = end;
            }

            searchPoint = Math.min(selectedEnd, end);
        }

        final int x = (mIsVertical ? 0 : searchPoint);
        final int y = (mIsVertical ? searchPoint : 0);
        mTempRect.set(x, y, x, y);

        newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction);
    }

    if (newFocus != null) {
        final int positionOfNewFocus = positionOfNewFocus(newFocus);

        // If the focus change is in a different new position, make sure
        // we aren't jumping over another selectable position.
        if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) {
            final int selectablePosition = lookForSelectablePositionOnScreen(direction);

            final boolean movingForward = (direction == View.FOCUS_DOWN || direction == View.FOCUS_RIGHT);
            final boolean movingBackward = (direction == View.FOCUS_UP || direction == View.FOCUS_LEFT);

            if (selectablePosition != INVALID_POSITION
                    && ((movingForward && selectablePosition < positionOfNewFocus)
                            || (movingBackward && selectablePosition > positionOfNewFocus))) {
                return null;
            }
        }

        int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus);

        final int maxScrollAmount = getMaxScrollAmount();
        if (focusScroll < maxScrollAmount) {
            // Not moving too far, safe to give next view focus
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll);
            return mArrowScrollFocusResult;
        } else if (distanceToView(newFocus) < maxScrollAmount) {
            // Case to consider:
            // Too far to get entire next focusable on screen, but by going
            // max scroll amount, we are getting it at least partially in view,
            // so give it focus and scroll the max amount.
            newFocus.requestFocus(direction);
            mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount);
            return mArrowScrollFocusResult;
        }
    }

    return null;
}

---

From source file:administrator.example.com.myscrollview.VerticalViewPager.java

/**
 * Pagekeypad?//from  w  w  w. ja v a2 s  . c o  m
 * @param direction ?
 * @return handled
 */
public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_UP) {
            // If there is nothing to the left, or this is causing us to
            // jump to the down, then what we really want to do is page up.
            if (currentFocused != null && nextFocused.getTop() >= currentFocused.getTop()) {
                handled = pageUp();
            } else {
                handled = nextFocused.requestFocus();
            } /* end of if */
        } else if (direction == View.FOCUS_DOWN) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            if (currentFocused != null && nextFocused.getTop() <= currentFocused.getTop()) {
                handled = pageDown();
            } else {
                handled = nextFocused.requestFocus();
            } /* end of if */
        } /* end of if */
    } else if (direction == FOCUS_UP || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageUp();
    } else if (direction == FOCUS_DOWN || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageDown();
    } /* end of if */
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    } /* end of if */
    return handled;
}

---

From source file:org.nekC.android.support.widget.RecyclerView.java

@Override
public View focusSearch(View focused, int direction) {
    View result = mLayout.onInterceptFocusSearch(focused, direction);
    if (result != null) {
        return result;
    }/*from   ww w. j av a  2s . c o  m*/
    final FocusFinder ff = FocusFinder.getInstance();
    result = ff.findNextFocus(this, focused, direction);
    if (result == null && mAdapter != null && mLayout != null) {
        eatRequestLayout();
        result = mLayout.onFocusSearchFailed(focused, direction, mRecycler, mState);
        resumeRequestLayout(false);
    }
    return result != null ? result : super.focusSearch(focused, direction);
}

---

From source file:com.example.view.VerticalViewPager.java

/**
 * Page keypad/*from  www.j  a  va  2 s  .  com*/
 * 
 * @param direction
 * @return handled
 */
public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_UP) {
            // If there is nothing to the left, or this is causing us to
            // jump to the down, then what we really want to do is page up.
            if (currentFocused != null && nextFocused.getTop() >= currentFocused.getTop()) {
                handled = pageUp();
            } else {
                handled = nextFocused.requestFocus();
            } /* end of if */
        } else if (direction == View.FOCUS_DOWN) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page
            // right.
            if (currentFocused != null && nextFocused.getTop() <= currentFocused.getTop()) {
                handled = pageDown();
            } else {
                handled = nextFocused.requestFocus();
            } /* end of if */
        } /* end of if */
    } else if (direction == FOCUS_UP || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageUp();
    } else if (direction == FOCUS_DOWN || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageDown();
    } /* end of if */
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    } /* end of if */
    return handled;
}

---

From source file:com.gome.ecmall.custom.VerticalViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;/* w w  w  .  j a  v a 2 s  .c  om*/

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_UP) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page
            // left.
            final int nextTop = getChildRectInPagerCoordinates(mTempRect, nextFocused).top;
            final int currTop = getChildRectInPagerCoordinates(mTempRect, currentFocused).top;
            if (currentFocused != null && nextTop >= currTop) {
                handled = pageTop();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_DOWN) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page
            // right.
            final int nextTop = getChildRectInPagerCoordinates(mTempRect, nextFocused).top;
            final int currTop = getChildRectInPagerCoordinates(mTempRect, currentFocused).top;
            if (currentFocused != null && nextTop <= currTop) {
                handled = pageBottom();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_UP || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageTop();
    } else if (direction == FOCUS_DOWN || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageBottom();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

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

/**
     * To avoid horizontal focus searches changing the selected item, we
     * manually focus search within the selected item (as applicable), and
     * prevent focus from jumping to something within another item.
     * @param direction one of {View.FOCUS_LEFT, View.FOCUS_RIGHT}
     * @return Whether this consumes the key event.
     */// w w  w. ja v  a2  s .  c  o m
    private boolean handleHorizontalFocusWithinListItem(int direction) {
        if (direction != View.FOCUS_UP && direction != View.FOCUS_DOWN) {
            throw new IllegalArgumentException("direction must be one of" + " {View.FOCUS_UP, View.FOCUS_DOWN}");
        }

        final int numChildren = getChildCount();
        if (mItemsCanFocus && numChildren > 0 && mSelectedPosition != INVALID_POSITION) {
            final View selectedView = getSelectedView();
            if (selectedView != null && selectedView.hasFocus() && selectedView instanceof ViewGroup) {

                final View currentFocus = selectedView.findFocus();
                final View nextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) selectedView,
                        currentFocus, direction);
                if (nextFocus != null) {
                    // do the math to get interesting rect in next focus' coordinates
                    currentFocus.getFocusedRect(mTempRect);
                    offsetDescendantRectToMyCoords(currentFocus, mTempRect);
                    offsetRectIntoDescendantCoords(nextFocus, mTempRect);
                    if (nextFocus.requestFocus(direction, mTempRect)) {
                        return true;
                    }
                }
                // we are blocking the key from being handled (by returning true)
                // if the global result is going to be some other view within this
                // list.  this is to acheive the overall goal of having
                // horizontal d-pad navigation remain in the current item.
                final View globalNextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) getRootView(),
                        currentFocus, direction);
                if (globalNextFocus != null) {
                    return isViewAncestorOf(globalNextFocus, this);
                }
            }
        }
        return false;
    }

---

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

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;/*from  w ww . j  ava2s .  c  o m*/

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_DOWN) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextBottom = getChildRectInPagerCoordinates(mTempRect, nextFocused).bottom;
            final int currBottom = getChildRectInPagerCoordinates(mTempRect, currentFocused).bottom;
            if (currentFocused != null && nextBottom >= currBottom) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_UP) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).bottom;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).bottom;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_DOWN || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_UP || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

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