Add SearchToolbarMenu widget implementation

src/main/kotlin/org/jetbrains/plugins/template/weatherApp/ui/components/SearchToolbarMenu.kt

@@ -0,0 +1,84 @@
+package org.jetbrains.plugins.template.weatherApp.ui.components
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.text.input.rememberTextFieldState
+import androidx.compose.foundation.text.input.setTextAndPlaceCursorAtEnd
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import org.jetbrains.jewel.ui.component.Icon
+import org.jetbrains.jewel.ui.component.OutlinedButton
+import org.jetbrains.jewel.ui.component.Text
+import org.jetbrains.jewel.ui.icons.AllIconsKeys
+import org.jetbrains.plugins.template.ComposeTemplateBundle
+import org.jetbrains.plugins.template.components.SearchBarWithAutoCompletion
+import org.jetbrains.plugins.template.weatherApp.model.PreviewableItem
+import org.jetbrains.plugins.template.weatherApp.model.Searchable
+import org.jetbrains.plugins.template.weatherApp.services.SearchAutoCompletionItemProvider
+
+@Composable
+internal fun <T> SearchToolbarMenu(
+    searchAutoCompletionItemProvider: SearchAutoCompletionItemProvider<T>,
+    confirmButtonText: String = "Confirm",
+    onSearchPerformed: (T) -> Unit = {},
+    onSearchConfirmed: (T) -> Unit = {},
+) where T : Searchable, T : PreviewableItem {
+    val isConfirmButtonVisible = remember { mutableStateOf(false) }
+    val previewItem = remember { mutableStateOf<T?>(null) }
+    val searchTextFieldState = rememberTextFieldState("")
+
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(horizontal = 2.dp, vertical = 4.dp)
+            .wrapContentHeight(),
+        horizontalArrangement = Arrangement.End,
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+
+        if (isConfirmButtonVisible.value) {
+            OutlinedButton(
+                onClick = {
+                    previewItem.value?.let { onSearchConfirmed(it) }
+
+                    searchTextFieldState.setTextAndPlaceCursorAtEnd("")
+                    isConfirmButtonVisible.value = false
+                    previewItem.value = null
+                },
+                modifier = Modifier
+                    .align(Alignment.CenterVertically),
+            ) {
+                Row(horizontalArrangement = Arrangement.spacedBy(4.dp)) {
+                    Icon(
+                        AllIconsKeys.Actions.AddList,
+                        contentDescription = ComposeTemplateBundle.message("search.toolbar.menu.add.button.content.description")
+                    )
+                    Text(confirmButtonText)
+                }
+            }
+        }
+
+
+        Spacer(modifier = Modifier.width(4.dp))
+
+        SearchBarWithAutoCompletion(
+            modifier = Modifier
+                .fillMaxWidth(0.4f)
+                .align(Alignment.CenterVertically),
+            searchAutoCompletionItemProvider = searchAutoCompletionItemProvider,
+            textFieldState = searchTextFieldState,
+            onInputCleared = {
+                isConfirmButtonVisible.value = false
+                previewItem.value = null
+            },
+            onItemAutocomplete = { autocompletedItem ->
+                isConfirmButtonVisible.value = true
+                previewItem.value = autocompletedItem
+                onSearchPerformed(autocompletedItem)
+            },
+        )
+    }
+}