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# Saturday, May 18, 2013

While trying to generalize our practices from KendoUI related projects we've participated so far, we updated control.js - a small javascript additions to KendoUI.

At present we have defined:

1. An extended model. See KendoUI extended model.

2. A lightweight user control - a widget to bind a template and a model, and to facilitate declarative instantiation. See KendoUI User control.

3. A reworked version of nesterovskyBros.defineControl() function.

var widgetType = scope.defineControl(
{
   name: widget-name-string,
   model: widget-model-type,
   template: optional-content-template,
   windowOptions: optional-window-options
},
base);

When optional-content-template is not specified then template is calculated as following:

var template = options.temlate || proto.template || model.temlate;

if (template === undefined)
{
  template = scope.template(options.name.toLowerCase() + "-template");
}

When windowOptions is specified then widgetType.dialog(options) function is defined. It's used to open dialog based on the specified user control. windowOptions is passed to kendo.ui.Window constructor. windowOptions.closeOnEscape indicates whether to close opened dialog on escape.

widgetType.dialog() returns a kendo.ui.Window instance with content based on the user control. Window instance contains functions:

  • result() - a $.Deffered for the dialog result, and
  • model() - referring to the user control model.

 The model instance has functions:

  •  dialog() referring to the dialog, and
  • result() referring to the dialog result.

widget.dialog() allows all css units in windowOptions.width and windowOptions.height parameters.

base - is optional user control base. It defaults to nesterovskyBros.ui.UserControl.

4. Adjusted splitter. See Adjust KendoUI Splitter.

5. Auto resize support.

Layout is often depends on available area. One example is Splitter widget that recalculates its panes when window or container Splitter is resized. There are other cases when you would like to adjust layout when a container's area is changed like: adjust grid, tab, editor or user's control contents.

KendoUI does not provide a solution for this problem, so we have defined our own.

  • A widget can be marked with class="auto-resize" marker;
  • A widget may define a widgetType.autoResize(element) function that adapts widget to a new size.
  • A code can call nesterovskyBros.resize(element) function at trigger resizing of the subtree.

To support existing controls we have defined autoResize() function for Grid, Splitter, TabStrip, and Editor widgets.

To see how auto resizing works, it's best to look into index.html, products.tmpl.html, and into the implementation controls.js.

Please note that we consider controls.js as an addition to KendoUI library. If in the future the library will integrate or implement similar features we will be happy to start using their API.

See also: Compile KendoUI templates.

Saturday, May 18, 2013 10:59:36 AM UTC  #    Comments [0] -
Announce | javascript | kendoui | Tips and tricks
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