If null is returned, the dispose() method is called. Implementations return null if an appropriate element could not be found or if it is different from getParameterOwner() of the provided UpdateParameterInfoContext. The findElementForUpdatingParameterInfo() method is called and it should find the correct function call ( ParameterOwner) for the changed caret position. The syncUpdateOnCaretMove() method is called. Therefore, when the user moves the caret or types something, the following happens: This allows for, e.g., highlighting a function usage with different arguments or simply moving the parameter info box closer to the caret. When a parameter info popup is displayed and the user types something or moves the caret, the displayed information is updated.
#INSTALLBUILDER INFOPARAMETER UPDATE#
No heavy work is allowed in this method since it runs on the UI thread and it should only update the UI representation using, e.g., setUIComponentEnabled() or setupUIComponentPresentation() of the provided ParameterInfoUIContext.Īfter that the following methods are called which will be explained in the next phase: findElementForUpdatingParameterInfo(), updateParameterInfo(), updateUI(). Implementations of this method usually just call showHint() of the CreateParameterInfoContext providing the offset at which the popup should appear.įor each item to show from step 1, the updateUI() method is called.
If the returned function call element is valid, the showParameterInfo() method is invoked. The findElementForParameterInfo() implementation should find all matching function definitions and store them using setItemsToShow() of the context parameter. It is advised to extract the actual search for the function call into a separate method since it can be re-used later. a function call at the current offset if it exists. The goal is to identify the ParameterOwner i.e. When overriding this method, language authors use the provided CreateParameterInfoContext to access, e.g., the file and offset of the current editor. The findElementForParameterInfo() method is called. The initial phase describes what happens when no parameter info is currently displayed and it is invoked either automatically or by the user. These contexts are, e.g., CreateParameterInfoContext, UpdateParameterInfoContext and ParameterInfoUIContext and they all derive from ParameterInfoContext. For the explanations that follow, we assume that ParameterOwner is a PSI element that represents a function call in a language, and ParameterType represents (possibly several) function definitions.Īdditionally, ParameterInfoHandler uses several context types that are mutable and used to adjust what and how parameter information is displayed. Language authors implement ParameterInfoHandler which takes two type parameters: ParameterOwner and ParameterType. Therefore, the interface of the ParameterInfoHandler EP consists of methods for initially collecting the required information to display parameter information at the caret position as well as methods to update what should be displayed during edits. This allows for highlighting entries or marking the current parameter at the caret position.
#INSTALLBUILDER INFOPARAMETER CODE#
Parameter info is dynamic and can update the displayed information when the caret is moved or additional code is typed. If it is available, the IDE can show this popup automatically after a short delay, or it can be invoked explicitly via View | Parameter Info. This is a convenient way to display type signatures directly as a popup in the editor without having to consult the documentation. This edition lacks cross platform build support, rpm, and deb generation, rpm integration, and Solaris, hp-ux, aix, and UNIX support.Custom languages can use ParameterInfoHandler registered in extension point (EP) to show information about parameters in method and function calls. Quick-build functionality allows you to update installers in a few seconds, without having to repack the entire application. A command line interface allows you to automate and integrate the building process.
For advanced users, a friendly XML project format supports source control integration, collaborative development and customizing projects both by hand and using external scripts.
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