Blimp: Added spinner to text input dialog

blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/input/WebInputConfirmationPanel.java

Index: blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/input/WebInputConfirmationPanel.java
diff --git a/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/input/WebInputConfirmationPanel.java b/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/input/WebInputConfirmationPanel.java
new file mode 100644
index 0000000000000000000000000000000000000000..33516fef847c869ec0c7c3b1c0437628fdf7839d
--- /dev/null
+++ b/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/input/WebInputConfirmationPanel.java
@@ -0,0 +1,127 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.blimp.core.contents.input;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ProgressBar;
+import android.widget.RelativeLayout;
+
+import org.chromium.blimp.R;
+
+/**
+ * A layout containing OK, Cancel buttons and a progress spinner which can be included at the bottom
+ * of a popup.
+ */
+public class WebInputConfirmationPanel extends RelativeLayout {
+    /**
+     * Interface that gets notified of the user actions on this layout.
+     */
+    public interface Listener {
+        /**
+         * The user has pressed OK button.
+         */
+        public void onConfirm();
+
+        /**
+         * The user has pressed cancel button.
+         */
+        public void onCancel();
+    }
+
+    private Listener mListener;
+
+    /**
+     * Builds a new {@link WebInputConfirmationPanel}.
+     * @param context The {@link Context} of the activity.
+     * @param attrs The {@link AttributeSet} associated with this layout.
+     */
+    public WebInputConfirmationPanel(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        inflate(context, R.layout.web_input_bottom_panel, this);
+    }
+
+    /**
+     * Registers the listener that will be notified of changes to this panel.
+     * @param listener The listener to be notified.
+     */
+    public void setListener(Listener listener) {
+        mListener = listener;
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+
+        final Button ok = (Button) findViewById(R.id.btn_ok);
+        final Button cancel = (Button) findViewById(R.id.btn_cancel);
+
+        ok.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mListener == null) return;
+
+                startAnimation();
+                mListener.onConfirm();
+            }
+        });
+
+        cancel.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mListener == null) return;
+
+                mListener.onCancel();
+            }
+        });
+    }
+
+    /**
+     * Starts animations for the widget.
+     */
+    public void startAnimation() {
+        final Button ok = (Button) findViewById(R.id.btn_ok);
+        final Button cancel = (Button) findViewById(R.id.btn_cancel);
+        final ProgressBar spinner = (ProgressBar) findViewById(R.id.submit_spinner);
+
+        // Animation for hiding the OK/Cancel buttons and showing the spinner.
+        ObjectAnimator okAlphaAnim = ObjectAnimator.ofFloat(ok, View.ALPHA, 0.f);
+        ObjectAnimator cancelAlphaAnim = ObjectAnimator.ofFloat(cancel, View.ALPHA, 0.f);
+        ObjectAnimator spinnerAlphaAnim = ObjectAnimator.ofFloat(spinner, View.ALPHA, 0.f, 1.f);
+
+        int translateX =
+                getResources().getDimensionPixelSize(R.dimen.web_input_dialog_button_translation_x);
+        ObjectAnimator okTranslateAnim =
+                ObjectAnimator.ofFloat(ok, View.TRANSLATION_X, 0, translateX);
+        ObjectAnimator cancelTranslateAnim =
+                ObjectAnimator.ofFloat(cancel, View.TRANSLATION_X, 0, translateX);
+
+        AnimatorSet animatorSet = new AnimatorSet();
+        animatorSet.playTogether(okAlphaAnim, cancelAlphaAnim, spinnerAlphaAnim, okTranslateAnim,
+                cancelTranslateAnim);
+        animatorSet.setDuration(250);
+
+        animatorSet.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                spinner.setVisibility(View.VISIBLE);
+            }
+
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                ok.setVisibility(View.INVISIBLE);
+                cancel.setVisibility(View.INVISIBLE);
+            }
+        });
+
+        animatorSet.start();
+    }
+}