Example usage for android.view ViewTreeObserver.OnGlobalFocusChangeListener ViewTreeObserver.OnGlobalFocusChangeListener

Introduction

In this page you can find the example usage for android.view ViewTreeObserver.OnGlobalFocusChangeListener ViewTreeObserver.OnGlobalFocusChangeListener.

Prototype

ViewTreeObserver.OnGlobalFocusChangeListener

Source Link

Usage

From source file:com.vuze.android.remote.fragment.TorrentListFragment.java

private void setupSideListArea(View view) {
    sideListArea = (LinearLayout) view.findViewById(R.id.sidelist_layout);
    if (sideListArea == null) {
        return;/*w ww .j a  va  2 s  .c  o m*/
    }

    FragmentActivity activity = getActivity();
    if (activity instanceof TorrentViewActivity) {
        ((TorrentViewActivity) activity).setBottomToolbarEnabled(false);
        ((TorrentViewActivity) activity).setShowGlobalActionBar(false);
    }

    if (!AndroidUtils.hasTouchScreen()) {
        // Switch SideList width based on focus.  For touch screens, we use
        // touch events.  For non-touch screens (TV) we watch for focus changes
        ViewTreeObserver vto = sideListArea.getViewTreeObserver();
        vto.addOnGlobalFocusChangeListener(new ViewTreeObserver.OnGlobalFocusChangeListener() {

            @Override
            public void onGlobalFocusChanged(View oldFocus, View newFocus) {

                boolean isChildOfSideList = isChildOf(newFocus, sideListArea);
                boolean isHeader = childOrParentHasTag(newFocus, "sideheader");
                if ((sidelistIsExpanded == null || sidelistIsExpanded) && !isChildOfSideList) {
                    //left focus
                    sidelistInFocus = false;
                    expandSideListWidth(false);
                } else if ((sidelistIsExpanded == null || !sidelistIsExpanded) && isHeader
                        && newFocus != listSideFilter) {
                    sidelistInFocus = true;
                    expandSideListWidth(true);
                }
            }
        });
    }

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
        LayoutTransition layoutTransition = new LayoutTransition();
        layoutTransition.setDuration(300);
        sideListArea.setLayoutTransition(layoutTransition);
    }

    // Could have used a ExpandableListView.. oh well
    setupExpando(view, R.id.sidesort_header, R.id.sidesort_list);
    setupExpando(view, R.id.sidetag_header, R.id.sidetag_list);
    setupExpando(view, R.id.sidefilter_header, R.id.sidefilter_list);
    setupExpando(view, R.id.sideactions_header, R.id.sideactions_list);

    setupSideFilter(view);
    setupSideTags(view);
    setupSideSort(view);
    setupSideActions(view);
}

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