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| -rw-r--r-- | src/frontends/android/src/org/strongswan/android/ui/LogScrollView.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/frontends/android/src/org/strongswan/android/ui/LogScrollView.java b/src/frontends/android/src/org/strongswan/android/ui/LogScrollView.java new file mode 100644 index 000000000..7eee820ce --- /dev/null +++ b/src/frontends/android/src/org/strongswan/android/ui/LogScrollView.java @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2012 Tobias Brunner + * Copyright (C) 2012 Giuliano Grassi + * Copyright (C) 2012 Ralf Sager + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +package org.strongswan.android.ui; + +import android.content.Context; +import android.util.AttributeSet; +import android.view.MotionEvent; +import android.view.View; +import android.widget.ScrollView; + +public class LogScrollView extends ScrollView +{ + private boolean mAutoScroll = true; + + public LogScrollView(Context context) + { + super(context); + } + + public LogScrollView(Context context, AttributeSet attrs) + { + super(context, attrs); + } + + public LogScrollView(Context context, AttributeSet attrs, int defStyle) + { + super(context, attrs, defStyle); + } + + @Override + public boolean onTouchEvent(MotionEvent ev) + { + /* disable auto-scrolling when the user starts scrolling around */ + if (ev.getActionMasked() == MotionEvent.ACTION_DOWN) + { + mAutoScroll = false; + } + return super.onTouchEvent(ev); + } + + /** + * Call this to move newly added content into view by scrolling to the bottom. + * Nothing happens if auto-scrolling is disabled. + */ + public void autoScroll() + { + if (mAutoScroll) + { + fullScroll(View.FOCUS_DOWN); + } + } + + @Override + protected void onScrollChanged(int l, int t, int oldl, int oldt) + { + super.onScrollChanged(l, t, oldl, oldt); + /* if the user scrolls to the bottom we enable auto-scrolling again */ + if (t == getChildAt(getChildCount() - 1).getHeight() - getHeight()) + { + mAutoScroll = true; + } + } +} |