Implement basic command dispatch logic

Moved command implementation into separate ressource.
Commands are plain JavaScript functions in this separate ressource and as such callable via a simple call to `eval`.
Introduced the concept of a command prefix to enable implementation of e.g. a search command analogously to _vim_.

4 files changed, 33 insertions, 8 deletions

diff --git a/qml/CommandInput.qml b/qml/CommandInput.qml
index 835ccae..e7defbf 100644
--- a/qml/CommandInput.qml
+++ b/qml/CommandInput.qml
@@ -2,6 +2,8 @@ import QtQuick 2.0
 import QtQuick.Layouts 1.1
 import Qt.labs.settings 1.0
 
+import "commands.js" as Commands
+
 Item {
 	id: item
 
@@ -17,8 +19,9 @@ Item {
 		property color  fontColor  : "white"
 	}
 
-	function focus() {
-		visible = true;
+	function focus(prefix) {
+		visible      = true;
+		command.text = prefix;
 		command.forceActiveFocus();
 	}
 
@@ -41,9 +44,9 @@ Item {
 			color:             settings.fontColor
 			selectionColor:    settings.fontColor
 			selectedTextColor: settings.background
-			text: ":"
+			selectByMouse:     true
 
-			selectByMouse:    true
+			function reset() { text = '' }
 
 			onAccepted: {
 				const prefix = String(text).charAt(0);
@@ -51,11 +54,13 @@ Item {
 
 				switch ( prefix ) {
 					case ':': {
-						eval(cmd);
-						text = ':';
+						Commands.execute(cmd);
+						reset();
 						break;
 					}
-					default: { }
+					default: {
+						console.log('"' + prefix + '"' + " is not a command prefix");
+					}
 				}
 			}
 		}
diff --git a/qml/StateHandler.qml b/qml/StateHandler.qml
index 8c78e2f..75c5d6b 100644
--- a/qml/StateHandler.qml
+++ b/qml/StateHandler.qml
@@ -103,7 +103,7 @@ Item {
 		onTriggered: {
 			item.state = "COMMAND";
 
-			commandInput.focus();
+			commandInput.focus(shortcut);
 		}
 	}
 
diff --git a/qml/commands.js b/qml/commands.js
new file mode 100644
index 0000000..ee13a1b
--- /dev/null
+++ b/qml/commands.js
@@ -0,0 +1,19 @@
+function execute(command) {
+	var args = command.split(' ');
+	var func = args[0];
+	args.shift();
+
+	eval(func + '(' + JSON.stringify(args) + ')');
+}
+
+function exec(args) {
+	eval(args.join(' '));
+}
+
+function next() {
+	terminalList.selectNext();
+}
+
+function prev() {
+	terminalList.selectPrev();
+}
diff --git a/qml/ui.qrc b/qml/ui.qrc
index df6d4e3..c8bd040 100644
--- a/qml/ui.qrc
+++ b/qml/ui.qrc
@@ -7,5 +7,6 @@
 		<file>CommandInput.qml</file>
 		<file>TerminalList.qml</file>
 		<file>Highlighter.qml</file>
+		<file>commands.js</file>
 	</qresource>
 </RCC>