Search Cookbooks for Mike Roberts
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Tree Item Renderer
The trick is to use the variableRowHeight property on the Tree and manually set the measuredHeight on the TreeItemRenderer. Although, I will not use canvases directly in the example since it obfuscates the main height variability code, you can add canvases into the CustomTreeItemRenderer yourself.
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Adding a combobox to a datagrid
In order to achieve a ComboBox in a DataGrid, you will need to create a ComboBox as a itemRenderer and itemEditor, bind your initial collection of data to the DataGrid's dataProvider and invoke a method whenever a change event is detected on one of the ComboBoxes.
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How to build a list of checkboxes with different labels fed ...
The solution is to simply bind your XML to the dataprovider of your list and set the itemRenderer of your list as a checkbox.
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I want to create a simple radar chart in Flash Builder 4
Creating a radar chart will require drawing Axes, Series and the necessary trigonometry to determine how to draw those items.
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How to implement a skin or apply CSS on an Alert in Flex 4?
Applying styles to an Alert in Flex 4 is similar to applying a style in Flex 3. Either a style tag or separate CSS file are needed.
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How to add countdown timer in Flex 3.0?
The solution is to use a Timer object so that you can periodically trigger a method which can check the time from a Date object.
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How to change the colors or remove the column and row separa ...
Changing or removing the datagrid row and column separators requires creating a new data grid skin and applying that skin.
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Skinning A Spark DataGrid Column Header
Skinning a Spark DataGrid Column Header Requires a couple extended SDK classes, but is straightforward once learned. In order to skin or color a Spark DataGrid header, we'll need to look at DataGridSkin and DefaultGridHeaderRenderer.
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Dynamic single select RadioButton DataGroup from XML
You can do this by defining a RadioButtonGroup and having a RadioButton ItemRenderers for a DataGroup which make themselves part of the RadioButtonGroup.
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Getting selected values of a Flex List of Checkboxes
The solution is to put the "selected" value into the dataprovider and not rely solely on looking up ItemRenderers and interrogating the Checkbox directly.
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