feat: automatically trigger autocompletion in view files on $ sign (#45)

Author: xHeaven

src/main/kotlin/com/github/tempest/framework/views/completion/ViewVariableTypedHandler.kt

@@ -0,0 +1,44 @@
+package com.github.tempest.framework.views.completion
+
+import com.github.tempest.framework.TempestFrameworkUtil
+import com.intellij.codeInsight.AutoPopupController
+import com.intellij.codeInsight.editorActions.TypedHandlerDelegate
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiFile
+
+class ViewVariableTypedHandler : TypedHandlerDelegate() {
+    override fun checkAutoPopup(charTyped: Char, project: Project, editor: Editor, file: PsiFile): Result {
+        if (charTyped != '$') return Result.CONTINUE
+        if (!file.name.endsWith(TempestFrameworkUtil.TEMPLATE_SUFFIX)) return Result.CONTINUE
+
+        val offset = editor.caretModel.offset
+        val text = editor.document.charsSequence
+
+        if (isInsideTemplateTag(text, offset)) {
+            AutoPopupController.getInstance(project).scheduleAutoPopup(editor)
+            return Result.STOP
+        }
+
+        return Result.CONTINUE
+    }
+
+    private fun isInsideTemplateTag(text: CharSequence, offset: Int): Boolean {
+        val textBefore = text.subSequence(0, offset).toString()
+
+        val lastRawOpen = textBefore.lastIndexOf("{!!")
+        val lastRawClose = textBefore.lastIndexOf("!!}")
+        val lastEscapedOpen = textBefore.lastIndexOf("{{")
+        val lastEscapedClose = textBefore.lastIndexOf("}}")
+
+        val inRawTag = lastRawOpen > lastRawClose && lastRawOpen >= 0
+        val inEscapedTag = lastEscapedOpen > lastEscapedClose && lastEscapedOpen >= 0
+
+        if (!inRawTag && !inEscapedTag) return false
+
+        val textAfter = text.subSequence(offset, text.length).toString()
+        val expectedCloseTag = if (inRawTag && lastRawOpen > lastEscapedOpen) "!!}" else "}}"
+
+        return textAfter.contains(expectedCloseTag)
+    }
+}

src/main/resources/META-INF/plugin.xml

@@ -70,6 +70,8 @@
         <psi.referenceContributor
                 language="PHP"
                 implementation="com.github.tempest.framework.db.references.QueryBuilderReferenceContributor"/>
+        <typedHandler
+                implementation="com.github.tempest.framework.views.completion.ViewVariableTypedHandler"/>
     </extensions>
     <extensions defaultExtensionNs="com.jetbrains.php">
         <libraryRoot id="tempest.meta-storm" path="meta-storm" runtime="false" />