X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?p=src%2Fapp-framework-demo.git;a=blobdiff_plain;f=afb-client%2Fbower_components%2Ftether%2Fdocs%2F3-Advanced%2F2-extending_tether.md;fp=afb-client%2Fbower_components%2Ftether%2Fdocs%2F3-Advanced%2F2-extending_tether.md;h=6a13e681a84a91b1da109e6f5f8c7ff0d1a672ae;hp=0000000000000000000000000000000000000000;hb=5b1e6cc132f44262a873fa8296a2a3e1017b0278;hpb=f7d2f9ac4168ee5064580c666d508667a73cefc0

diff --git a/afb-client/bower_components/tether/docs/3-Advanced/2-extending_tether.md b/afb-client/bower_components/tether/docs/3-Advanced/2-extending_tether.md
new file mode 100644
index 0000000..6a13e68
--- /dev/null
+++ b/afb-client/bower_components/tether/docs/3-Advanced/2-extending_tether.md
@@ -0,0 +1,54 @@
+Extending Tether
+-----
+
+Tether has a module system which can be used to modify Tether's positioning, or just do something each time the Tether is moved.
+
+Tether has an array called `Tether.modules`, push onto it to add a module:
+
+```coffeescript
+Tether.modules.push
+  position: ({top, left}) ->
+    top += 10
+
+    {top, left}
+```
+
+#### Position
+
+Your position function can either return a new object with `top` and `left`, `null`/`undefined` to leave the coordinates unchanged, or
+`false` to cancel the positioning.
+
+The position function is passed an object with the following elements:
+
+```javascript
+{
+  left, // The element's new position, from the top left corner of the page
+  top,
+  targetAttachment, // The targetAttachment, with 'auto' resolved to an actual attachment
+  targetPos, // The coordinates of the target
+  attachment, // The attachment, as passed in the option
+  elementPos, // The coordinates of the element
+  offset, // The offset, after it's converted into pixels and the manual offset is added
+  targetOffset, // The attachment is converted into an offset and is included in these values
+  manualOffset, // The manual offset, in pixels
+  manualTargetOffset
+}
+```
+
+It is called with the Tether instance as its context (`this`).
+
+#### Initialize
+
+Modules can also have an `initialize` function which will be called when a new tether is created.  The initialize function
+is also called with the Tether instance as its context.
+
+```coffeescript
+Tether.modules.push
+  initialize: ->
+    console.log "New Tether Created!", @
+```
+
+#### Examples
+
+[Constraints](https://github.com/HubSpot/tether/blob/master/coffee/constraint.coffee) and [shift](https://github.com/HubSpot/tether/blob/master/coffee/shift.coffee) are both implemented as modules.
+[Mark Attachment](https://github.com/HubSpot/tether/blob/master/coffee/markAttachment.coffee) is used by the docs.