EIP-1102: add isEnabled convenience method to provider

1 files changed, 19 insertions, 1 deletions

diff --git a/app/scripts/controllers/provider-approval.js b/app/scripts/controllers/provider-approval.js
index 8c7520d59..918fc8ad0 100644
--- a/app/scripts/controllers/provider-approval.js
+++ b/app/scripts/controllers/provider-approval.js
@@ -18,7 +18,15 @@ class ProviderApprovalController {
     this.publicConfigStore = publicConfigStore
     this.approvedOrigins = {}
     platform && platform.addMessageListener && platform.addMessageListener(({ action, origin }) => {
-      action && action === 'init-provider-request' && this.handleProviderRequest(origin)
+      if (!action) { return }
+      switch (action) {
+        case 'init-provider-request':
+          this.handleProviderRequest(origin)
+          break
+        case 'provider-status-request':
+          this.handleProviderStatusRequest(origin)
+          break
+      }
     })
   }
 
@@ -37,6 +45,16 @@ class ProviderApprovalController {
   }
 
   /**
+   * Called by a tab to detemrine if a full Ethereum provider API is exposed
+   *
+   * @param {string} origin - Origin of the window requesting provider status
+   */
+  async handleProviderStatusRequest (origin) {
+    const isEnabled = await this.isApproved(origin)
+    this.platform && this.platform.sendMessage({ action: 'provider-status', isEnabled }, { active: true })
+  }
+
+  /**
    * Called when a user approves access to a full Ethereum provider API
    *
    * @param {string} origin - Origin of the target window to approve provider access