From 04153a386980960ca5d00a604086271cd3b37c8e Mon Sep 17 00:00:00 2001
From: Taylor Kline <taylor.kline@streamingfreebies.com>
Date: Sun, 2 Apr 2017 22:20:03 -0500
Subject: [PATCH] Grey 'LED blink pattern' when LED Color is None

Add BooleanListPreference to allow pref_led_blink to depend on
pref_led_color being non-None.

Closes #6480
---
 res/xml/preferences_notifications.xml         |  4 +-
 .../preferences/BooleanListPreference.java    | 58 +++++++++++++++++++
 2 files changed, 60 insertions(+), 2 deletions(-)
 create mode 100644 src/org/thoughtcrime/securesms/preferences/BooleanListPreference.java

diff --git a/res/xml/preferences_notifications.xml b/res/xml/preferences_notifications.xml
index e71e6b7220..cf121de691 100644
--- a/res/xml/preferences_notifications.xml
+++ b/res/xml/preferences_notifications.xml
@@ -19,7 +19,7 @@
                         android:title="@string/preferences__vibrate"
                         android:summary="@string/preferences__also_vibrate_when_notified" />
 
-    <ListPreference
+    <org.thoughtcrime.securesms.preferences.BooleanListPreference
         android:key="pref_led_color"
         android:defaultValue="blue"
         android:title="@string/preferences__led_color"
@@ -31,7 +31,7 @@
         android:key="pref_led_blink"
         android:defaultValue="500,2000"
         android:title="@string/preferences__pref_led_blink_title"
-        android:dependency="pref_key_enable_notifications"
+        android:dependency="pref_led_color"
         android:entries="@array/pref_led_blink_pattern_entries"
         android:entryValues="@array/pref_led_blink_pattern_values" />
 
diff --git a/src/org/thoughtcrime/securesms/preferences/BooleanListPreference.java b/src/org/thoughtcrime/securesms/preferences/BooleanListPreference.java
new file mode 100644
index 0000000000..6a7ae1e81a
--- /dev/null
+++ b/src/org/thoughtcrime/securesms/preferences/BooleanListPreference.java
@@ -0,0 +1,58 @@
+/**
+ * Copyright (C) 2017 Whisper Systems
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.thoughtcrime.securesms.preferences;
+
+import android.content.Context;
+import android.preference.ListPreference;
+import android.util.AttributeSet;
+
+import org.thoughtcrime.securesms.R;
+
+/**
+ * List preference that disables dependents when set to "none", similar to a CheckBoxPreference.
+ *
+ * @author Taylor Kline
+ */
+
+public class BooleanListPreference extends ListPreference {
+
+  public BooleanListPreference(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public BooleanListPreference(Context context) {
+    super(context);
+  }
+
+  @Override
+  public void setValue(String value) {
+    CharSequence oldEntry = getEntry();
+    super.setValue(value);
+    CharSequence newEntry = getEntry();
+    if (oldEntry != newEntry) {
+      notifyDependencyChange(shouldDisableDependents());
+    }
+  }
+
+  @Override
+  public boolean shouldDisableDependents() {
+    CharSequence newEntry = getEntry();
+    String noneEntry = getContext().getString(R.string.preferences__none);
+    boolean shouldDisable = newEntry.equals(noneEntry);
+    return shouldDisable || super.shouldDisableDependents();
+  }
+}