I'm currently trying to develop an Eclipse Plugin to support code replacement, like what the default content assist in Eclipse do. What I want to implement is something like "insert argument names automatically on method completion with visualized box around the argument" and I can "use the Tab key to navigate between the inserted names" and "while navigating, list of optional variables for current argument can be displayed and be chosen".
In short, it comes to two questions:
How to add the visualized box around the already existed variable or even Java keywords that need replacement? And at the meanwhile I can use Tab key to switch between these boxes.
How to display a list of candidates to select from when I trigger on the box?
By now I only figure out the extension point : org.eclipse.jdt.ui.javaCompletionProposalComputer may be useful, but I have no idea where to start at? Thanks in advance.
Oh, finally I've solved it myself...
For the 'box', it should be the LinkedModeModel, this class should work with LinkedPositionGroup and LinkedPosition to add mutiple boxes. And we should use LinkedModeUI to set it up.
For the content assistant, there's no need to use the extension point. There is a ProposalPosition class which extends LinkedPosition for you to add your proposals for the 'box' in its constructor. And we can simply use the CompletionProposal to construct a ICompletionProposal array as the argument of ProposalPosition's constructor.
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I wish to create a VSCode extension with an entry form on it - some way of input. So far I have only seen document processing or output for an extension.
How can you display a form of input fields in a vscode extension?
How much data do they need to enter? If it's not much, you should be able to handle it with a series of InputBoxes
From https://code.visualstudio.com/docs/extensionAPI/vscode-api
showInputBox(options?: InputBoxOptions): Thenable<string>
Opens an input box to ask the user for input.
The returned value will be undefined if the input box was canceled (e.g. pressing ESC). Otherwise the returned value will be the string typed by the user or an empty string if the user did not type anything but dismissed the input box with OK.
Parameter Description
options?: InputBoxOptions
Configures the behavior of the input box.
Returns Description
Thenable<string>
A promise that resolves to a string the user provided or to undefined in case of dismissal.
The Visual Studio Code API does not have any native methods to display forms to collect input. You can however, chain together Input Boxes, Quick Picks, etc... You can find all these methods under vscode.window.(...).
If these do not satisfy your needs you can implement a webview which allows you to render integrated HTML in Visual Studio Code and trade messages with the extension.
The most simple aproach would be to simple send all collected data from the form to the extension once you hit the submit button or something similar.
You have a nice little tutorial on how to do that here.
Another approach is to see how far you can go with editing JSON objects in settings.json. I thought I would need a form for 8-10 fields, but it turns out that I can create a settings template that has a series of labels and and entry fields (with type validation).
I'm running my code in debug mode in eclipse and in the middle of it, I want to change the size of a List,say from 9 to 6, by deleting 3 elements.
But I'm not seeing any option to do that, in fact what I'm seeing is the option to change the values present in the elements.
So how can I delete the elements itself from the List ?
Make sure you have the "Variables" tabs on eclipse "Debug" view focused on your current evaluated code.
In "Debug" view, right-click on "Value" cell inside the "Variables" table, and select "Change value".
You will have an option to write a Java expression so you can add something like:
yourList.add("newItem"); or: yourList.remove(0);
Make sure to reload the variable ("F5") once you are done and you will see the updated state.
Note that not every List implementation supports add() or remove() methods.
See this for more details if you encounter an exception.
See also:
Eclipse docs - Variables view
Eclipse docs - Change variable value
I was looking to do something similar. I had an ArrayList containing 1 element, and I wanted to remove it.
I tried #Leet-Falcon's answer, e.g. yourList.remove(0), and Eclipse replied "Unsupported operation exception".
What ended up working was : return new java.util.ArrayList<>();
Looks like the "Debug Shell" view allows this, or additionally if it's a simple enough list, the following simple Change Variable can also work:
new ArrayList<String>(java.util.Arrays.asList("1","2")) // or any other simple list
Modifying Java Collection (List) Variable in Eclipse Debugger
I'm creating a multilingual Drupal site and trying to implement a search function, that only displays results in the current language, that the user is viewing the site through.
Using Drupals own searchfunction at /search/node it is possible to select which language to search for through the "Advanced search" options, and it works perfectly. However, I dont want to expose these language selectboxes, I just want it to only search in the current language automatically.
What's the best option to do this?
I have one solution where I create a hook_form_alter function, that sets the #default_value in the language selectboxes to the current language, and then I hide the whole "advanced options" with in css. This doesnt seem very right though.
I think the most clean solution would be to hook into Drupals form-processing process and append ex "language:en" to the input text, but I cannot get this to work.
Does anyone know if it is possible via one of the Drupal form related alter functions, to get a hold of the input text and alter it before drupal does its final processing of it?
To answer your question specifically, while using 'hook_form_alter', you have a referenced variable called '$form_state'. This stores the values in the form, and any change there will be passed further.
Also,
I think setting a default value and hiding the field is a good solution as any, only, if you are hiding it you should do it server side, while altering the form. The same field you are setting the default value to. like this:
$fieldname['#type'] = 'hidden'.
One particular problem I was having was using ${word_selection} in an Eclipse PDT template.
I was recently trying to use some code templates with Eclipse PDT 2.1 to speed up some common tasks. We use a lot of getters/setters, so I wrote the following template.
function get${word_selection}() {
return $$this->getData('${word_selection}');
}
function set${word_selection}($$${word_selection}) {
$$this->setData('${word_selection}', $$${word_selection});
}
I named the template "getset" and the only way I know to use the Code Assist is to type: "getset" then hit my code assist keys (I have it set to Esc, but I think the default was Ctrl+Space). The problem is, this doesn't actually let me select a word to be used by the ${word_selection}.
how do I type in my template name, hit the key combo, and have a word selected all at the same time?
I also want to know what kinds of templates people have set up and any other tips for using templates to speed of programming.
Look at this link : http://2tbsp.com/node/104
It describes two things : pdt code templates and code snippets.
how do I type in my template name, hit the key combo, and have a word selected all at the same time?
I think this cannot be achieved with code templates, but with code snippets. Personnally I do not use them at all, but I might start :-)
Is there an option in Eclipse PDT to show every call of chosen function.
I now if you select some kind of function and hit F3 key you will see a definition of selected function.
Open the Search Menu, Choose 'Search...', and navigate to the PHP tab, then
Enter the method name in the search string text box;
Select Method in the Search for group;
Select References in the Limit to group.
Find method usages http://img217.imageshack.us/img217/83/eclipsepdtfindmethodusa.png
We have a plugin for that... nWire for PHP. It's a comprehensive PHP code analyzer which represents all your code associations, invocations included in one quick and easy to use view. It can also represent the associations graphically.