feat: supports remembering window positions

src/main/kotlin/app/termora/TermoraFrameManager.kt

@@ -2,10 +2,13 @@ package app.termora
 
 import com.formdev.flatlaf.util.SystemInfo
 import org.slf4j.LoggerFactory
+import java.awt.Frame
 import java.awt.event.WindowAdapter
 import java.awt.event.WindowEvent
 import javax.swing.JOptionPane
+import javax.swing.UIManager
 import javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE
+import kotlin.math.max
 import kotlin.system.exitProcess
 
 class TermoraFrameManager {
@@ -20,16 +23,32 @@ class TermoraFrameManager {
     }
 
     private val frames = mutableListOf<TermoraFrame>()
+    private val properties get() = Database.getDatabase().properties
 
     fun createWindow(): TermoraFrame {
-        val frame = TermoraFrame()
-        registerCloseCallback(frame)
+        val frame = TermoraFrame().apply { registerCloseCallback(this) }
         frame.title = if (SystemInfo.isLinux) null else Application.getName()
         frame.defaultCloseOperation = DO_NOTHING_ON_CLOSE
-        frame.setSize(1280, 800)
-        frame.setLocationRelativeTo(null)
-        frames.add(frame)
-        return frame
+
+        val rectangle = getFrameRectangle() ?: FrameRectangle(-1, -1, 1280, 800, 0)
+        if (rectangle.isMaximized) {
+            frame.setSize(1280, 800)
+            frame.setLocationRelativeTo(null)
+            frame.extendedState = rectangle.s
+        } else {
+            // 控制最小
+            frame.setSize(
+                max(rectangle.w, UIManager.getInt("Dialog.width") - 150),
+                max(rectangle.h, UIManager.getInt("Dialog.height") - 100)
+            )
+            if (rectangle.x == -1 && rectangle.y == -1) {
+                frame.setLocationRelativeTo(null)
+            } else {
+                frame.setLocation(max(rectangle.x, 0), max(rectangle.y, 0))
+            }
+        }
+
+        return frame.apply { frames.add(this) }
     }
 
     fun getWindows(): Array<TermoraFrame> {
@@ -41,6 +60,9 @@ class TermoraFrameManager {
         window.addWindowListener(object : WindowAdapter() {
             override fun windowClosed(e: WindowEvent) {
 
+                // 存储位置信息
+                saveFrameRectangle(window)
+
                 // 删除
                 frames.remove(window)
 
@@ -87,4 +109,27 @@ class TermoraFrameManager {
 
         exitProcess(0)
     }
+
+    private fun saveFrameRectangle(frame: TermoraFrame) {
+        properties.putString("TermoraFrame.x", frame.x.toString())
+        properties.putString("TermoraFrame.y", frame.y.toString())
+        properties.putString("TermoraFrame.width", frame.width.toString())
+        properties.putString("TermoraFrame.height", frame.height.toString())
+        properties.putString("TermoraFrame.extendedState", frame.extendedState.toString())
+    }
+
+    private fun getFrameRectangle(): FrameRectangle? {
+        val x = properties.getString("TermoraFrame.x")?.toIntOrNull() ?: return null
+        val y = properties.getString("TermoraFrame.y")?.toIntOrNull() ?: return null
+        val w = properties.getString("TermoraFrame.width")?.toIntOrNull() ?: return null
+        val h = properties.getString("TermoraFrame.height")?.toIntOrNull() ?: return null
+        val s = properties.getString("TermoraFrame.extendedState")?.toIntOrNull() ?: return null
+        return FrameRectangle(x, y, w, h, s)
+    }
+
+    private data class FrameRectangle(
+        val x: Int, val y: Int, val w: Int, val h: Int, val s: Int
+    ) {
+        val isMaximized get() = (s and Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH
+    }
 }