implement tab widget session restore

src/app/browser/window/tab/item/widget/database.rs

@@ -0,0 +1,81 @@
+use sqlite::{Error, Transaction};
+
+pub struct Table {
+    pub id: i64,
+    // pub app_browser_window_tab_item_id: i64, not in use
+    pub title: Option<String>,
+}
+
+pub struct Database {
+    // nothing yet..
+}
+
+impl Database {
+    pub fn init(tx: &Transaction) -> Result<usize, Error> {
+        tx.execute(
+            "CREATE TABLE IF NOT EXISTS `app_browser_window_tab_item_widget`
+            (
+                `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                `app_browser_window_tab_item_id` INTEGER NOT NULL,
+                `title` TEXT
+            )",
+            [],
+        )
+    }
+
+    pub fn add(
+        tx: &Transaction,
+        app_browser_window_tab_item_id: &i64,
+        title: Option<&String>,
+    ) -> Result<usize, Error> {
+        tx.execute(
+            "INSERT INTO `app_browser_window_tab_item_widget` (
+                `app_browser_window_tab_item_id`,
+                `title`
+            ) VALUES (?, ?)",
+            (app_browser_window_tab_item_id, title),
+        )
+    }
+
+    pub fn records(
+        tx: &Transaction,
+        app_browser_window_tab_item_id: &i64,
+    ) -> Result<Vec<Table>, Error> {
+        let mut stmt = tx.prepare(
+            "SELECT `id`,
+                    `app_browser_window_tab_item_id`,
+                    `title`
+                    FROM `app_browser_window_tab_item_widget`
+                    WHERE `app_browser_window_tab_item_id` = ?",
+        )?;
+
+        let result = stmt.query_map([app_browser_window_tab_item_id], |row| {
+            Ok(Table {
+                id: row.get(0)?,
+                // app_browser_window_tab_item_id: row.get(1)?, not in use
+                title: row.get(2)?,
+            })
+        })?;
+
+        let mut records = Vec::new();
+
+        for record in result {
+            let table = record?;
+            records.push(table);
+        }
+
+        Ok(records)
+    }
+
+    pub fn delete(tx: &Transaction, id: &i64) -> Result<usize, Error> {
+        tx.execute(
+            "DELETE FROM `app_browser_window_tab_item_widget` WHERE `id` = ?",
+            [id],
+        )
+    }
+
+    /* not in use
+    pub fn last_insert_id(tx: &Transaction) -> i64 {
+        tx.last_insert_rowid()
+    } */
+}