From fc0add67b511c662fa3d2e5c790a34419e8dd9cb Mon Sep 17 00:00:00 2001
From: Vinyl Darkscratch <vinyldarkscratch@gmail.com>
Date: Tue, 29 Nov 2016 14:05:17 -0800
Subject: [PATCH] Add web2py componentBegin event
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Like the “w2p:componentComplete” event I added a while back, this is
another event that I use in my website, and I thought it would be
helpful to share it with others.  This way, you can easily catch when a
web2py component starts loading, and write a handler for whatever
reason (in my case, determining when the user is navigating to a new
page through a smooth loading function piggybacking off of the web2py
component system)
---
 applications/admin/static/js/web2py.js    | 1 +
 applications/examples/static/js/web2py.js | 1 +
 applications/welcome/static/js/web2py.js  | 1 +
 3 files changed, 3 insertions(+)

diff --git a/applications/admin/static/js/web2py.js b/applications/admin/static/js/web2py.js
index c8b5e585..1228961c 100644
--- a/applications/admin/static/js/web2py.js
+++ b/applications/admin/static/js/web2py.js
@@ -317,6 +317,7 @@
                     'beforeSend': function (xhr, settings) {
                         xhr.setRequestHeader('web2py-component-location', document.location);
                         xhr.setRequestHeader('web2py-component-element', target);
+                        web2py.fire(element, 'w2p:componentBegin', [xhr, settings], target);
                         return web2py.fire(element, 'ajax:beforeSend', [xhr, settings], target); //test a usecase, should stop here if returns false
                     },
                     'success': function (data, status, xhr) {
diff --git a/applications/examples/static/js/web2py.js b/applications/examples/static/js/web2py.js
index c8b5e585..1228961c 100644
--- a/applications/examples/static/js/web2py.js
+++ b/applications/examples/static/js/web2py.js
@@ -317,6 +317,7 @@
                     'beforeSend': function (xhr, settings) {
                         xhr.setRequestHeader('web2py-component-location', document.location);
                         xhr.setRequestHeader('web2py-component-element', target);
+                        web2py.fire(element, 'w2p:componentBegin', [xhr, settings], target);
                         return web2py.fire(element, 'ajax:beforeSend', [xhr, settings], target); //test a usecase, should stop here if returns false
                     },
                     'success': function (data, status, xhr) {
diff --git a/applications/welcome/static/js/web2py.js b/applications/welcome/static/js/web2py.js
index c8b5e585..1228961c 100644
--- a/applications/welcome/static/js/web2py.js
+++ b/applications/welcome/static/js/web2py.js
@@ -317,6 +317,7 @@
                     'beforeSend': function (xhr, settings) {
                         xhr.setRequestHeader('web2py-component-location', document.location);
                         xhr.setRequestHeader('web2py-component-element', target);
+                        web2py.fire(element, 'w2p:componentBegin', [xhr, settings], target);
                         return web2py.fire(element, 'ajax:beforeSend', [xhr, settings], target); //test a usecase, should stop here if returns false
                     },
                     'success': function (data, status, xhr) {