Dynamic Installer Requirements - <dynamicinstallerrequirements>
Introduced in IzPack 5.0, the <dynamicinstallerrequirements> element is used to enhance the "classic" installer requirement checking that IzPack does at the beginning of an installation process. This stops the installation unless a certain condition is met.
With the dynamicinstallerrequirements element, you can check a certain set of conditions on each panel change, using a panel data validator to check if the required conditions are met.
Common Example
If a condition applies, a messagebox is shown with the appropriate content from translation. Depending on the value of severity attribute the installation might be continued or is aborted:
- "error"
The messagebox is shown and the installation aborts. - "warning"
The messagebox is shown and the installation can continue after the OK button is pressed.
A more detailed example:
On each panel with a DynamicInstallerRequirementValidator assigned will be evaluated according to the requirements given as nested elements in <dynamicinstallerrequirements>.
<installerrequirement> - Attributes
| Attribute | Description | Default | Required |
|---|---|---|---|
severity | The severity the validator should apply in case of the condition gets true. Possible values: "warning" | "error"
| none | yes |
condition | A valid condition ID defined within the <conditions/> element. | none | yes |
messageid | A valid message ID from the appropriate translation file. If it can't be found the mentioned ID itself is displayed instead of the translated text. | none | yes |
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