FileDocCategorySizeDatePackage
IconMerger.javaAPI DocAndroid 1.5 API4249Wed May 06 22:42:00 BST 2009com.android.server.status

IconMerger

public class IconMerger extends android.widget.LinearLayout

Fields Summary
private static final boolean
SPEW
StatusBarService
service
StatusBarIcon
moreIcon
private int
mBugWorkaroundNumber
private android.os.Handler
mBugWorkaroundHandler
private Runnable
mBugWorkaroundRunnable
Constructors Summary
public IconMerger(android.content.Context context, android.util.AttributeSet attrs)


         
        super(context, attrs);
    
Methods Summary
protected voidonLayout(boolean changed, int l, int t, int r, int b)

        super.onLayout(changed, l, t, r, b);

        final int maxWidth = r - l;
        final int N = getChildCount();
        int i;

        // get the rightmost one, and see if we even need to do anything
        int fitRight = -1;
        for (i=N-1; i>=0; i--) {
            final View child = getChildAt(i);
            if (child != null && child.getVisibility() != GONE) {
                fitRight = child.getRight();
                break;
            }
        }

        // find the first visible one that isn't the more icon
        View moreView = null;
        int fitLeft = -1;
        int startIndex = -1;
        for (i=0; i<N; i++) {
            final View child = getChildAt(i);
            if (com.android.internal.R.drawable.stat_notify_more == child.getId()) {
                moreView = child;
                startIndex = i+1;
            }
            else if (child != null && child.getVisibility() != GONE) {
                fitLeft = child.getLeft();
                break;
            }
        }

        if (moreView == null || startIndex < 0) {
            throw new RuntimeException("Status Bar / IconMerger moreView == null");
        }
        
        // if it fits without the more icon, then hide the more icon and update fitLeft
        // so everything gets pushed left
        int adjust = 0;
        if (fitRight - fitLeft <= maxWidth) {
            adjust = fitLeft - moreView.getLeft();
            fitLeft -= adjust;
            fitRight -= adjust;
            moreView.layout(0, moreView.getTop(), 0, moreView.getBottom());
        }
        int extra = fitRight - r;
        int shift = -1;

        int breakingPoint = fitLeft + extra + adjust;
        int number = 0;
        for (i=startIndex; i<N; i++) {
            final View child = getChildAt(i);
            if (child != null && child.getVisibility() != GONE) {
                int childLeft = child.getLeft();
                int childRight = child.getRight();
                if (childLeft < breakingPoint) {
                    // hide this one
                    child.layout(0, child.getTop(), 0, child.getBottom());
                    int n = this.service.getIconNumberForView(child);
                    if (n == 0) {
                        number += 1;
                    } else if (n > 0) {
                        number += n;
                    }
                } else {
                    // decide how much to shift by
                    if (shift < 0) {
                        shift = childLeft - fitLeft;
                    }
                    // shift this left by shift
                    child.layout(childLeft-shift, child.getTop(),
                                    childRight-shift, child.getBottom());
                }
            }
        }
        
        // BUG: Updating the text during the layout here doesn't seem to cause
        // the view to be redrawn fully.  The text view gets resized correctly, but the
        // text contents aren't drawn properly.  To work around this, we post a message
        // and provide the value later.  We're the only one changing this value show it
        // should be ordered correctly.
        if (false) {
            this.moreIcon.update(number);
        } else {
            mBugWorkaroundNumber = number;
            mBugWorkaroundHandler.post(mBugWorkaroundRunnable);
        }