[the-board/wip/http-api: 5/5] [chrome] Add initial code for The Board's chrome extension

[Lucas Rocha <lucasr src gnome org>]

commit a680fa3df8da808551f4a50eb175a564b57cd436
Author: Lucas Rocha <lucasr gnome org>
Date:   Tue Nov 23 18:11:21 2010 +0000

    [chrome] Add initial code for The Board's chrome extension

 src/chrome/background.html |    1 +
 src/chrome/background.js   |  102 ++++++++++++++++++++++++++++++++++++++++++++
 src/chrome/icon.png        |  Bin 0 -> 353 bytes
 src/chrome/manifest.json   |   14 ++++++
 4 files changed, 117 insertions(+), 0 deletions(-)
---
diff --git a/src/chrome/background.html b/src/chrome/background.html
new file mode 100644
index 0000000..ac3f43e
--- /dev/null
+++ b/src/chrome/background.html
@@ -0,0 +1 @@
+<script src="background.js"></script>
diff --git a/src/chrome/background.js b/src/chrome/background.js
new file mode 100644
index 0000000..da72c30
--- /dev/null
+++ b/src/chrome/background.js
@@ -0,0 +1,102 @@
+var _THE_BOARD_URL = "http://localhost:2010/";;
+
+function callMethod(methodName, args, onLoad, onError) {
+    var req = new XMLHttpRequest();
+
+    var url = _THE_BOARD_URL + methodName;
+
+    if (args) {
+        url += "?";
+
+        var first = true;
+        for (argName in args) {
+            url += (first ? "" : "&") +
+                   argName + "=" + args[argName];
+
+            first = false;
+        }
+    }
+
+    req.open("PUT", encodeURI(url), true);
+
+    var onLoadInternal = function() {
+        onLoad(req.responseText);
+    }
+
+    var onErrorInternal = function() {
+        onError();
+    }
+
+    if (onLoad) {
+        req.onload = onLoadInternal;
+    }
+
+    if (onError) {
+        req.onerror = onErrorInternal;
+    }
+
+    req.send(null);
+}
+
+function addNoteToTheBoard(text) {
+    var args = { thingId: "note",
+                 text: text };
+
+    callMethod("addThing", args);
+}
+
+function addLabelToTheBoard(text) {
+    var args = { thingId: "label",
+                 text: text };
+
+    callMethod("addThing", args);
+}
+
+function onMenuClick(info, tab) {
+    if ('linkUrl' in info) {
+        addLabelToTheBoard(info.linkUrl)
+    }
+
+    if ('selectionText' in info) {
+        addNoteToTheBoard(info.selectionText);
+    }
+}
+
+function pingTheBoard() {
+    var onPingError = function() {
+        removeContextMenuItem();
+    };
+
+    var onPingResponse = function() {
+        addContextMenuItem();
+    };
+
+    callMethod("ping", null, onPingResponse, onPingError);
+}
+
+var contextMenuItemId = null;
+
+function addContextMenuItem() {
+    if (contextMenuItemId) {
+        return;
+    }
+
+    contextMenuItemId =
+        chrome.contextMenus.create({ title: "Add to The Board",
+                                     contexts: ["selection", "link"],
+                                     onclick: onMenuClick });
+}
+
+function removeContextMenuItem() {
+    if (!contextMenuItemId) {
+        return;
+    }
+
+    chrome.contextMenus.remove(contextMenuItemId);
+    contextMenuItemId = null;
+}
+
+// FIXME: It's a bit bad that we have to keep
+// polling The Board to know if it's available.
+// Maybe there's a nicer way to do this?
+setInterval(pingTheBoard, 5000);
diff --git a/src/chrome/icon.png b/src/chrome/icon.png
new file mode 100644
index 0000000..265231f
Binary files /dev/null and b/src/chrome/icon.png differ
diff --git a/src/chrome/manifest.json b/src/chrome/manifest.json
new file mode 100644
index 0000000..3eba211
--- /dev/null
+++ b/src/chrome/manifest.json
@@ -0,0 +1,14 @@
+{
+  "name": "The Board",
+  "version": "0.1",
+  "description": "Chrome's integration with GNOME's The Board",
+  "background_page": "background.html",
+  "permissions": [
+    "contextMenus",
+    "notifications",
+    "http://localhost/";
+  ],
+  "icons": {
+    "16": "icon.png"
+  } 
+}