display completions in plugin

I assume that you have also checked the Completion Contributor article, right? That example is still valid, but you may try the following snippet:

extend(CompletionType.BASIC, psiElement(),
    new CompletionProvider<CompletionParameters>() {
        public void addCompletions(@NotNull CompletionParameters parameters,
                                   @NotNull ProcessingContext context,
                                   @NotNull CompletionResultSet resultSet) {
            for (String element : elements) {
                resultSet.addElement(LookupElementBuilder.create("\"" + element + "\""));
                resultSet.addElement(LookupElementBuilder.create("'" + element + "'"));
            }
        }
    }
);

psiElement() allows you to invoke the completion on any PSI Element - so no filtering is applied.

When adding elements to the resultSet, add quotation characters explicitly.

Thanks Jakub!!

I am already using that article.

extend( CompletionType.BASIC,
        PlatformPatterns.psiElement(),
        new CompletionProvider<CompletionParameters>() {
            public void addCompletions(@NotNull CompletionParameters parameters,
                                       @NotNull ProcessingContext context,
                                       @NotNull CompletionResultSet resultSet)

This is what I am using and by using this I am able to get this in case of a txt file.

But not in case of a JavaScript file as below.

can you please guide me

Did you add <completion.contributor> for JavaScript in your plugin.xml file?

This is what I did.

<extensions defaultExtensionNs="com.intellij">
    <!-- Add your extensions here -->
    <completion.contributor language="any" implementationClass="com.completions.CompletionContributor" />
</extensions>

Does this help??

Just to make sure I am getting correct completions in case of a text file 

but not getting correct completions in case of javascript file

Thanks

With

language="any"

it should work for all file types. Have. you tried to debug it and check if it stops in the addCompletions method?

Thanks Jakub

it does not stop in addCompletions method.

I am able to get multiple completions in a single line in a JS file like this and these completions are displayed automatically when I start typing.

But when I try to get completions in this format className = "completion1Here  completion2Here"

Then i am able to get completion completion1Here by invoking completions manually using ctrl+space but not automatically,

and not able to get completions2Here even after invoking completions manually

in this case, I am able to get actions__container by invoking completions manually but able to get the second completion even after invoking completions manually.

Just to make sure both the screenshots here are of JavaScript file and I want to insert multiple completions in one line.

Can you share your code as a minimal reproducible example project so I may debug it locally?

Thanks, Jakub 

public class CompletionContributor extends com.intellij.codeInsight.completion.CompletionContributor {
    public CompletionContributor() {
        extend( CompletionType.BASIC,
                PlatformPatterns.psiElement(),
                new CompletionProvider<CompletionParameters>() {
                    public void addCompletions(@NotNull CompletionParameters parameters,
                                               @NotNull ProcessingContext context,
                                               @NotNull CompletionResultSet resultSet) {

                        resultSet.addElement(LookupElementBuilder.create("actions"));
                        resultSet.addElement(LookupElementBuilder.create("actions--container"));
                        resultSet.addElement(LookupElementBuilder.create("dropdown"));
                        resultSet.addElement(LookupElementBuilder.create("input"));
                    }
                }
        );
    }

}

<idea-plugin>
    <id>completions</id>
    <name>completions_provider</name>
    <vendor email="abc@xyz.com" url="xyz.com">completions provider</vendor>

    <description><![CDATA[
    plugin for providing completions plugin for providing completions
    ]]></description>


    <depends>com.intellij.modules.platform</depends>
    <extensions defaultExtensionNs="com.intellij">
        <completion.contributor language="any" implementationClass="com.completions.CompletionContributor" />
    </extensions>

    <actions>
        <!-- Add your actions here -->
    </actions>
</idea-plugin>

Is this sufficient??

Seems to be working as expected - isn't it?

Thanks, Jakub

Yes, it is working perfectly on your system.

I think there is some system-specific problem. I will try to look for it.

Just one last thing. Can you tell me if there is any problem with my build.gradle file or any other thing which can cause a issue.

plugins {
    id 'java'
    id 'org.jetbrains.intellij' version '0.4.21'
}

group 'org.example'
version '1.2.2'

repositories {
    mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
}

// See https://github.com/JetBrains/gradle-intellij-plugin/
intellij {
    version '2020.1.2'
    type 'IU'
}
patchPluginXml {
    changeNotes """
      Add change notes here.<br>
      <em>most HTML tags may be used</em>"""
}