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christoph s blog christoph s blog monitor workspace errors in the dock with 3 comments many applications decorate their icon in the dock task bar on windows with a number nowadays those icons show the number of unread emails articles calendar events and so on but their is a well known ide which is not doing so this brought me to the idea eclipse could show the number of errors in the workspace i dig through the problems view code and came up with a small plug in which i call the errormonitor after installing it your dock could look like this this is especially useful when doing some huge refactoring and not having the problems view visible all the time how do you know your workspace hasn t any errors and you are done you can just look at the dock now and check if there are any errors remaining if you like that idea give it a try and install it from http ckulla github com sandbox errormonitor update the source is available on github as well https github com ckulla sandbox tree master errormonitor please feel free to leave any comments written by christoph kulla april 15 2011 at 6 23 pm posted in eclipse hover support in xtext 2 0 with 9 comments from the time i was starting with xtext 2 3 years ago i recall a statement from sven efftinge saying i want a jdt for all my languages well xtext is great and it is coming closer and closer to the jdt level the guys are really doing a fantastic job but something i was missing was the support for hovers like the jdt offers for java doc comments so i started to work on this topic and had the chance to contribute my implementation back to xtext some of you may have already noticed it in the latest milestones of xtext 2 0 let s take a closer look at it introduction when editing a mwe2 file with xtext 2 0 you can see the hovers in action just move your mouse over a reference to a mwe2 variable and a hover will show up i use mwe2 as an example language here there is no special configuration in mwe2 to show these hovers it should work for any language out of the box the hover displays the text of the leading multi line comment java style if you want to display different content or your language may have a different comment syntax just replace the default implementation with your own and adopt the guice configuration the hover will appear whenever you move your mouse on a cross reference or on a declaration of an element it is a 3 step procedure get the element on the mouse hover location if it is a cross reference get the referenced element if it is a name of a declaration get the declared element element means an eobject this is implemented in abstracteobjecthover get the documentation for the element in step 1 see interface ieobjectdocumentationprovider the default implementation retrieves the documentation from the leading multi line comment see multilinecommentdocumentationprovider the returned documentation is of type string please note that the ieobjectdocumentationprovider interface is contained in xtext s non ui plug in it may be useful without the user interface e g generating documents from your model display the documentation of step 2 see dispatchingeobjecttexthover and ieobjecthoverprovider and defaulteobjecthoverprovider the default hover implementation is implemented by a browser widget this means the documentation can contain any html formatting and it will be displayed correct e g you can include images the default implementation adds the type name and the element name in front of the actual documentation the hover will appear in content assist as well support of multiple languages xtext supports references across different languages or meta models a file may can contain references to elements of other languages what does this mean for hovers well each language can have it s own type of hover therefore an editor has to support different types of hovers this is supported by utilizing the iglobalserviceprovider implemented by sven each language metamodel can register it s own ieobjecthoverprovider via a shared module look at dispatchingeobjecttexthover for reference this mechanism is used to display java doc hovers for references to the javatypes meta model java references you can experience this mechanism in mwe2 just move your mouse over a java reference it looks like this is the original jdt hover luckily no code duplication is required to make it available code completion works as well i expect this to work the same way for the upcoming xtend2 i m looking forward to it quick fixes i ve also added a quick fix hover as known from jdt it should work out of the box for any language which is providing quick fixes again no additional configuration is required to make this work for your language summary that s it you get hovers for free with xtext 2 0 you don t have to work with the itexthover interfaces you can just provide your own ieobjectdocumentationprovider to change the hover content it supports rich formatting via html the guice configuration still allows you to use your own itexthover implementation where it is appropriate the jdt javadoc hover is supported out of the box for java references please feel free to add any comments i would be happy to hear from you finally i would like to thank the xtext team for supporting me and applying my contribution i enjoyed to work with you guys written by christoph kulla february 6 2011 at 1 06 pm posted in uncategorized christoph kulla christoph kulla works as a software engineer in the automotive domain robert bosch car multimedia he is focusing on software architecture and development methodology of in vehicle infotainment systems christoph has a passion for model driven software development java and eclipse recent posts monitor workspace errors in the dock hover support in xtext 2 0 twitter updates tweets by ckulla blog at wordpress com subscribe subscribed christoph s blog sign me up already have a wordpress com account log in now privacy christoph s blog subscribe subscribed sign up 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