From 9444f266730b4b2b2a064a3d2557962d5db16a5f Mon Sep 17 00:00:00 2001
From: Martin Fietz <Martin.Fietz@gmail.com>
Date: Wed, 4 Mar 2015 14:34:35 +0100
Subject: Show UndoBar when dismiss-by-swipe

---
 .../core/util/gui/UndoBarController.java           | 121 +++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 core/src/main/java/de/danoeh/antennapod/core/util/gui/UndoBarController.java

(limited to 'core/src/main/java/de')

diff --git a/core/src/main/java/de/danoeh/antennapod/core/util/gui/UndoBarController.java b/core/src/main/java/de/danoeh/antennapod/core/util/gui/UndoBarController.java
new file mode 100644
index 000000000..0e03bc8b4
--- /dev/null
+++ b/core/src/main/java/de/danoeh/antennapod/core/util/gui/UndoBarController.java
@@ -0,0 +1,121 @@
+package de.danoeh.antennapod.core.util.gui;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Parcelable;
+import android.text.TextUtils;
+import android.view.View;
+import android.widget.TextView;
+
+import com.nineoldandroids.animation.Animator;
+import com.nineoldandroids.animation.AnimatorListenerAdapter;
+import com.nineoldandroids.view.ViewHelper;
+import com.nineoldandroids.view.ViewPropertyAnimator;
+
+import de.danoeh.antennapod.core.R;
+
+import static com.nineoldandroids.view.ViewPropertyAnimator.animate;
+
+public class UndoBarController {
+    private View mBarView;
+    private TextView mMessageView;
+    private ViewPropertyAnimator mBarAnimator;
+    private Handler mHideHandler = new Handler();
+
+    private UndoListener mUndoListener;
+
+    // State objects
+    private Parcelable mUndoToken;
+    private CharSequence mUndoMessage;
+
+    public interface UndoListener {
+        void onUndo(Parcelable token);
+    }
+
+    public UndoBarController(View undoBarView, UndoListener undoListener) {
+        mBarView = undoBarView;
+        mBarAnimator = animate(mBarView);
+        mUndoListener = undoListener;
+
+        mMessageView = (TextView) mBarView.findViewById(R.id.undobar_message);
+        mBarView.findViewById(R.id.undobar_button)
+                .setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        hideUndoBar(false);
+                        mUndoListener.onUndo(mUndoToken);
+                    }
+                });
+
+        hideUndoBar(true);
+    }
+
+    public void showUndoBar(boolean immediate, CharSequence message, Parcelable undoToken) {
+        mUndoToken = undoToken;
+        mUndoMessage = message;
+        mMessageView.setText(mUndoMessage);
+
+        mHideHandler.removeCallbacks(mHideRunnable);
+        mHideHandler.postDelayed(mHideRunnable,
+                mBarView.getResources().getInteger(R.integer.undobar_hide_delay));
+
+        mBarView.setVisibility(View.VISIBLE);
+        if (immediate) {
+            ViewHelper.setAlpha(mBarView, 1);
+        } else {
+            mBarAnimator.cancel();
+            mBarAnimator
+                    .alpha(1)
+                    .setDuration(
+                            mBarView.getResources()
+                                    .getInteger(android.R.integer.config_shortAnimTime))
+                    .setListener(null);
+        }
+    }
+
+    public void hideUndoBar(boolean immediate) {
+        mHideHandler.removeCallbacks(mHideRunnable);
+        if (immediate) {
+            mBarView.setVisibility(View.GONE);
+            ViewHelper.setAlpha(mBarView, 0);
+            mUndoMessage = null;
+        } else {
+            mBarAnimator.cancel();
+            mBarAnimator
+                    .alpha(0)
+                    .setDuration(mBarView.getResources()
+                            .getInteger(android.R.integer.config_shortAnimTime))
+                    .setListener(new AnimatorListenerAdapter() {
+                        @Override
+                        public void onAnimationEnd(Animator animation) {
+                            mBarView.setVisibility(View.GONE);
+                            mUndoMessage = null;
+                            mUndoToken = null;
+                        }
+                    });
+        }
+    }
+
+    public void onSaveInstanceState(Bundle outState) {
+        outState.putCharSequence("undo_message", mUndoMessage);
+        outState.putParcelable("undo_token", mUndoToken);
+    }
+
+    public void onRestoreInstanceState(Bundle savedInstanceState) {
+        if (savedInstanceState != null) {
+            mUndoMessage = savedInstanceState.getCharSequence("undo_message");
+            mUndoToken = savedInstanceState.getParcelable("undo_token");
+
+            if (mUndoToken != null || !TextUtils.isEmpty(mUndoMessage)) {
+                showUndoBar(true, mUndoMessage, mUndoToken);
+            }
+        }
+    }
+
+    private Runnable mHideRunnable = new Runnable() {
+        @Override
+        public void run() {
+            hideUndoBar(false);
+        }
+    };
+}
-- 
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