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package org.rtems.cdt.toolchain;
import org.eclipse.cdt.managedbuilder.core.IBuildObject;
import org.eclipse.cdt.managedbuilder.core.IHoldsOptions;
import org.eclipse.cdt.managedbuilder.core.IManagedOptionValueHandler;
import org.eclipse.cdt.managedbuilder.core.IOption;
import org.eclipse.core.runtime.IPath;
public class RtemsInstallBspDirectoryValueHandler implements IManagedOptionValueHandler {
private IPath installedBspLibPath; // e.g., /opt/rtems_install/i386-rtems4.9/pc686/lib
public RtemsInstallBspDirectoryValueHandler() {
installedBspLibPath = RtemsEnvironmentVariableSupplier.getRtemsInstallBspLibDirectory();
}
/**
* Handles transfer between values between UI element and
* back-end in different circumstances.
*
* @param configuration build configuration of option
* (may be IConfiguration or IResourceConfiguration)
* @param holder contains the holder of the option
* @param option the option that is handled
* @param extraArgument extra argument for handler
* @param event event to be handled, one of the following:
* (EVENT_OPEN = 1, EVENT_CLOSE = 2,
* EVENT_SETDEFAULT = 3,
* EVENT_APPLY = 4, EVENT_LOAD = 5)
*
* @return True when the event was handled, false otherwise.
* This enables default event handling can take place.
*/
public boolean handleValue(IBuildObject configuration, IHoldsOptions holder,
IOption option, String extraArgument, int event) {
if (event == EVENT_CLOSE) return false;
try {
String optionValue = (String) option.getValue();
if (optionValue==null || optionValue.trim().length()<=0) {
option.setValue(installedBspLibPath.toPortableString());
}
} catch (Exception e) {
return false;
}
return true;
}
/**
* Checks whether the value of an option is its default value.
*
* @param configuration build configuration of option
* (may be IConfiguration or IResourceConfiguration)
* @param holder contains the holder of the option
* @param option the option that is handled
* @param extraArgument extra argument for handler
*
* The additional options besides configuration are supplied to
* provide enough information for querying the default value from
* a potential data storage back-end.
*
* @return True if the options value is its default value and
* False otherwise. This enables that default event handling can
* take place.
*/
public boolean isDefaultValue(IBuildObject configuration,
IHoldsOptions holder, IOption option, String extraArgument) {
if (installedBspLibPath==null) return false;
return installedBspLibPath.toPortableString().equals(option.getValue());
}
/**
* Checks whether an enumeration value of an option is currently a
* valid choice. The use-case for this method is the case, where
* the set of valid enumerations in the plugin.xml file changes.
* The UI will remove entries from selection lists if the value
* returns false.
*
* @param configuration build configuration of option
* (may be IConfiguration or IResourceConfiguration)
* @param holder contains the holder of the option
* @param option the option that is handled
* @param extraArgument extra argument for handler
* @param enumValue enumeration value that is to be checked
*
* The additional options besides configuration are supplied to
* provide enough information for querying information from a
* a potential data storage back-end.
*
* @return True if the enumeration value is valid and False
* otherwise.
*/
public boolean isEnumValueAppropriate(IBuildObject configuration,
IHoldsOptions holder, IOption option, String extraArgument,
String enumValue) {
// By default return true for all the enum values.
return true;
}
}
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