From 5e87fc2bcfec4c5d8898bec1477bd6152d7dd09b Mon Sep 17 00:00:00 2001
From: Kedlub <jakubkyzr@gmail.com>
Date: Fri, 20 Jan 2023 08:32:08 +0100
Subject: [PATCH] Swipe to back prototype

---
 apps/backswipe/ChangeLog     |   1 +
 apps/backswipe/app.png       | Bin 0 -> 1620 bytes
 apps/backswipe/boot.js       |  33 +++++++++++++++++++++++++++++++++
 apps/backswipe/metadata.json |  13 +++++++++++++
 4 files changed, 47 insertions(+)
 create mode 100644 apps/backswipe/ChangeLog
 create mode 100644 apps/backswipe/app.png
 create mode 100644 apps/backswipe/boot.js
 create mode 100644 apps/backswipe/metadata.json

diff --git a/apps/backswipe/ChangeLog b/apps/backswipe/ChangeLog
new file mode 100644
index 000000000..5560f00bc
--- /dev/null
+++ b/apps/backswipe/ChangeLog
@@ -0,0 +1 @@
+0.01: New App!
diff --git a/apps/backswipe/app.png b/apps/backswipe/app.png
new file mode 100644
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diff --git a/apps/backswipe/boot.js b/apps/backswipe/boot.js
new file mode 100644
index 000000000..c45acd4c8
--- /dev/null
+++ b/apps/backswipe/boot.js
@@ -0,0 +1,33 @@
+(function () {
+  // Overrride the default setUI method, so we can save the back button callback
+  var setUI = Bangle.setUI;
+  Bangle.setUI = function (mode, cb) {
+    var options = {};
+    if ("object"==typeof mode) {
+      options = mode;
+    }
+
+    print("Setting UI");
+    if(global.BACK) delete global.BACK;
+    if (options && options.back) {
+      print("Saving back callback");
+      global.BACK = options.back;
+    }
+    setUI(mode, cb);
+  };
+
+  function goBack(lr, ud) {
+    // if it is a left to right swipe
+    if (lr === 1) {
+      print("Back swipe detected");
+      // if we're in an app that has a back button, run the callback for it
+      if (global.BACK) {
+        print("Running back callback");
+        global.BACK();
+      }
+    }
+  }
+
+  // Listen to left to right swipe
+  Bangle.on("swipe", goBack);
+})();
diff --git a/apps/backswipe/metadata.json b/apps/backswipe/metadata.json
new file mode 100644
index 000000000..6b7eea3d8
--- /dev/null
+++ b/apps/backswipe/metadata.json
@@ -0,0 +1,13 @@
+{ "id": "backswipe",
+  "name": "Back Swipe",
+  "shortName":"BackSwipe",
+  "version":"0.01",
+  "description": "Service that allows you to use an app's back button using left to right swipe gesture",
+  "icon": "app.png",
+  "tags": "back,gesture,swipe",
+  "supports" : ["BANGLEJS2"],
+  "type": "bootloader",
+  "storage": [
+    {"name":"backswipe.boot.js","url":"boot.js"}
+  ]
+}