Root commit

1 files changed, 110 insertions, 0 deletions

diff --git a/background.js b/background.js
new file mode 100644
index 0000000..c1be6e4
--- /dev/null
+++ b/background.js
@@ -0,0 +1,110 @@
+const PROTOCOL_VERSION = 0
+
+const port = browser.runtime.connectNative("hidit")
+
+port.onDisconnect.addListener(port => {
+  if (port.error) {
+    // TODO(V): Write a more precise error message
+    console.error(`Disconnected due to an error: ${port.error.message}`)
+    // TODO(V): Do we want to restart the application here? Do we want to kill the extension?
+  }
+})
+
+function checkVersion(version) {
+  if (version !== PROTOCOL_VERSION) {
+    console.error(`Native application protocol has an incompatible version! Wanted ${PROTOCOL_VERSION}, got ${version}`)
+    // TODO(V): Fatal error. Ideally we would repeat this process once a second or so, and display
+    // an error icon in the toolbar to alert the user, along with some information on how to solve it.
+  }
+
+  port.onMessage.removeListener(checkVersion)
+  port.onMessage.addListener(([command, args]) => {
+    switch (command) {
+      case "console:log": console.log(...args); break
+      case "console:error": console.error(...args); break
+      default: throw new Error(`Unknown command ${command}`)
+    }
+  })
+
+  browser.windows.onCreated.addListener(window => {
+    port.postMessage(["window:create", window])
+  })
+
+  browser.windows.onFocusChanged.addListener(windowId => {
+    port.postMessage(["window:focus", windowId])
+  })
+
+  browser.windows.onRemoved.addListener(windowId => {
+    port.postMessage(["window:destroy", windowId])
+  })
+
+  browser.windows.getAll().then(windows => {
+    port.postMessage(["init:windows", windows])
+  })
+
+  browser.tabs.onActivated.addListener(({ windowId, tabId, previousTabId }) => {
+    port.postMessage(["tab:activate", [windowId, tabId, previousTabId]])
+  })
+
+  browser.tabs.onAttached.addListener((tabId, { newWindowId, newPosition }) => {
+    port.postMessage(["tab:attach", [tabId, newWindowId, newPosition]])
+  })
+
+  browser.tabs.onCreated.addListener(tab => {
+    port.postMessage(["tab:create", tab])
+  })
+
+  browser.tabs.onDetached.addListener((tabId, { oldWindowId, oldPosition }) => {
+    port.postMessage(["tab:detach", [tabId, oldWindowId, oldPosition]])
+  })
+
+  browser.tabs.onHighlighted.addListener(({ windowId, tabIds }) => {
+    port.postMessage(["tab:select", [windowId, tabIds]])
+  })
+
+  browser.tabs.onMoved.addListener((tabId, info) => {
+    port.postMessage(["tab:move", [tabId, info]])
+  })
+
+  browser.tabs.onRemoved.addListener((tabId, { windowId, isWindowClosing }) => {
+    port.postMessage(["tab:destroy", [tabId, windowID, isWindowClosing]])
+  })
+
+  // Note: MDN has the following to say:
+  // "This event may not be relevant for or supported by browsers other than Chrome."
+  browser.tabs.onReplaced.addListener((newTabId, oldTabId) => {
+    port.postMessage(["tab:replace", [oldTabId, newTabId]])
+  })
+
+  // TODO(V): Remove the tab parameter, it shouldn't be necessary if we're doing deltas properly
+  browser.tabs.onUpdated.addListener((tabId, info, tab) => {
+    port.postMessage(["tab:update", [tabId, info, tab]])
+  })
+
+  browser.tabs.onZoomChange.addListener(info => {
+    port.postMessage(["tab:zoom", info])
+  })
+
+  browser.tabs.query({}).then(tabs => {
+    port.postMessage(["init:tabs", tabs])
+  })
+
+  browser.contextualIdentities.onCreated.addListener(({ contextualIdentity }) => {
+    port.postMessage(["context:create", contextualIdentity])
+  })
+
+  browser.contextualIdentities.onRemoved.addListener(({ contextualIdentity }) => {
+    port.postMessage(["context:destroy", contextualIdentity])
+  })
+
+  browser.contextualIdentities.onUpdated.addListener(({ contextualIdentity }) => {
+    port.postMessage(["context:update", contextualIdentity])
+  })
+
+  browser.contextualIdentities.query({}).then(contexts => {
+    port.postMessage(["init:contexts", contexts])
+    // TODO(V): either send over the files in resource://usercontext-content/ or vendor them
+  })
+}
+port.onMessage.addListener(checkVersion)
+port.postMessage(PROTOCOL_VERSION)