feat: open SFTP directly to the current SSH server (#216)

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

@@ -1,5 +1,7 @@
 package app.termora
 
+import app.termora.actions.DataProvider
+import app.termora.terminal.DataKey
 import app.termora.transport.TransportDataProviders
 import app.termora.transport.TransportPanel
 import java.beans.PropertyChangeListener
@@ -8,7 +10,7 @@ import javax.swing.JComponent
 import javax.swing.JOptionPane
 import javax.swing.SwingUtilities
 
-class SFTPTerminalTab : Disposable, TerminalTab {
+class SFTPTerminalTab : Disposable, TerminalTab, DataProvider {
 
     private val transportPanel by lazy {
         TransportPanel().apply {
@@ -54,4 +56,12 @@ class SFTPTerminalTab : Disposable, TerminalTab {
         ) == JOptionPane.OK_OPTION
     }
 
+    @Suppress("UNCHECKED_CAST")
+    override fun <T : Any> getData(dataKey: DataKey<T>): T? {
+        if (dataKey == TransportDataProviders.TransportPanel) {
+            return transportPanel as T
+        }
+        return null
+    }
+
 }

src/main/kotlin/app/termora/transport/SFTPAction.kt

@@ -1,7 +1,9 @@
 package app.termora.transport
 
+import app.termora.Host
 import app.termora.Icons
 import app.termora.SFTPTerminalTab
+import app.termora.SSHTerminalTab
 import app.termora.actions.AnAction
 import app.termora.actions.AnActionEvent
 import app.termora.actions.DataProviders
@@ -9,15 +11,61 @@ import app.termora.actions.DataProviders
 class SFTPAction : AnAction("SFTP", Icons.folder) {
     override fun actionPerformed(evt: AnActionEvent) {
         val terminalTabbedManager = evt.getData(DataProviders.TerminalTabbedManager) ?: return
+        val selectedTerminalTab = terminalTabbedManager.getSelectedTerminalTab()
+        val host = if (selectedTerminalTab is SSHTerminalTab) selectedTerminalTab.host else null
+
         val tabs = terminalTabbedManager.getTerminalTabs()
         for (tab in tabs) {
             if (tab is SFTPTerminalTab) {
                 terminalTabbedManager.setSelectedTerminalTab(tab)
+                if (host != null) {
+                    connectHost(host, tab)
+                }
                 return
             }
         }
 
         // 创建一个新的
-        terminalTabbedManager.addTerminalTab(SFTPTerminalTab())
+        val tab = SFTPTerminalTab()
+        terminalTabbedManager.addTerminalTab(tab)
+
+        if (host != null) {
+            connectHost(host, tab)
+        }
+    }
+
+    /**
+     * 如果当前选中的是 SSH 服务器 Tab，那么直接打开 SFTP 通道
+     */
+    private fun connectHost(host: Host, tab: SFTPTerminalTab) {
+        val tabbed = tab.getData(TransportDataProviders.TransportPanel)
+            ?.getData(TransportDataProviders.RightFileSystemTabbed) ?: return
+
+        // 如果已经有对应的连接
+        for (i in 0 until tabbed.tabCount) {
+            val c = tabbed.getComponentAt(i)
+            if (c is SftpFileSystemPanel) {
+                if (c.host == host) {
+                    tabbed.selectedIndex = i
+                    return
+                }
+            }
+        }
+
+        // 寻找空的 Tab，如果有则占用
+        for (i in 0 until tabbed.tabCount) {
+            val c = tabbed.getComponentAt(i)
+            if (c is SftpFileSystemPanel) {
+                if (c.host == null) {
+                    c.host = host
+                    c.connect()
+                    tabbed.selectedIndex = i
+                    return
+                }
+            }
+        }
+
+        // 开启一个新的
+        tabbed.addTab(host.name, SftpFileSystemPanel(host).apply { connect() })
     }
 }

src/main/kotlin/app/termora/transport/SftpFileSystemPanel.kt

@@ -25,7 +25,7 @@ import java.util.concurrent.atomic.AtomicBoolean
 import javax.swing.*
 
 class SftpFileSystemPanel(
-    private var host: Host? = null
+    var host: Host? = null
 ) : JPanel(BorderLayout()), Disposable {
 
     companion object {