The FieldEditorPreferencePage
supports other types of field editors. These different types include BooleanFieldEditor
, ColorFieldEditor
, ScaleFieldEditor
, FileFieldEditor
, DirectoryFieldEditor
, PathEditor
, and RadioGroupFieldEditor
. Add a sample of each of these types to the Clock preference page to find out what they can store.
createFieldEditors
method of ClockPreferencePage
and add the following at the bottom of the method:addField(new BooleanFieldEditor("tick", "Boolean value", getFieldEditorParent())); addField(new ColorFieldEditor("color", "Favorite color", getFieldEditorParent())); addField(new ScaleFieldEditor("scale", "Scale", getFieldEditorParent(), 0, 360, 10, 90)); addField(new FileFieldEditor("file", "Pick a file", getFieldEditorParent())); addField(new DirectoryFieldEditor("dir", "Pick a directory", getFieldEditorParent())); addField(new PathEditor("path", "Path", "Directory", getFieldEditorParent())); addField(new RadioGroupFieldEditor("group", "Radio choices", 3, data, getFieldEditorParent(), true));
This change added different types of standard field editors provided by the JFace package, to give a flavor of the types of data entry elements that can be shown.
Some of the editors are specific to the kinds of entry points that are used in Eclipse itself, such as file, directory, or path editors. Others are more general, such as color, scale, boolean, or radio choices.
The values are persisted in the preferences format as text values, appropriate to the data type. To see what the values are written to, go to the runtime-EclipseApplication/.metadata/.plugins/org.eclipse.core.runtime/.settings/com.packtpub.e4.clock.ui.prefs
file. The contents look like this:
color=49,241,180 eclipse.preferences.version=1 favorite=Europe/Milton_Keynes group=Europe/Milton_Keynes launchCount=28 scale=78 tick=true
The persisted color value is stored as a red/green/blue triple, while the boolean value is stored as a true
or false
value.
3.19.56.114