Provide APIs to set active (hovered) and tooltip elements.
Chart.setActiveElements will set the hovered items.
Chart.tooltip.setActiveElements will set the tooltip items.
* Provide method to lookup a chart from a canvas
* Throw an error during construction if a canvas is in use
* Migration docs for new constructor behaviour
* Cleanup Event Handling code to match style of tooltip plugin.
Eliminates saving two arrays of items on the chart prototype. The `onHover`
callback now receives the wrapped event instead of the native one.
* Convert axis options from arrays to objects
* Updated all chart type defaults
* Throw errors when axis type or position are not specified
* Avoid raising unnecessary errors when merging options into the default configs
* Fix additional tests
* Ensure scale defaults are set if type is not explicitly defined
* Another step
* Include `scale` as `firstIDs.r`
* update docs
* Update for buildOrUpdateScales
* Update migration guide
* Add test back
These methods shouldn't have been public since they are specific to the chart controller internal logic. Note that this scale custom merging will be removed in v3.
- allow options to be updated in-place or as a new object
- re-merge new options and rebuild scales & tooltips
- preserve reference to old scale if id/type not changed
- related tests and new sample also added.
- update document about options update
- update doc and example
Chrome specific issue that happens when destroying a chart and re-creating it immediately (same animation frame?). The CSS animation used to detect when the canvas become visible is not re-evaluated, breaking responsiveness. Accessing the `offsetParent` property will force a reflow and re-evaluate the CSS animation.
Allow to create a chart on a canvas not yet attached to the DOM (detection based on CSS animations described in https://davidwalsh.name/detect-node-insertion). The resize element (IFRAME) is added only when the canvas receives a parent or when `style.display` changes from `none`. This change also allows to re-parent the canvas under a different node (the resizer element following). This is a preliminary work for the DIV based resizer.
The original implementation tries to intercept events from the chart internal iframe, which ones failing on Chrome 60. Checking internals doesn't seem the best approach, instead we could consider that a chart has been resized after the resize method has been called and processed. So let's hook `Chart.resize` and callback once it's done.
