editors, part 1

dlanguilib.visualdproj

@@ -328,6 +328,7 @@
     </Folder>
     <Folder name="widgets">
      <File path="src\dlangui\widgets\controls.d" />
+     <File path="src\dlangui\widgets\editors.d" />
      <File path="src\dlangui\widgets\layouts.d" />
      <File path="src\dlangui\widgets\lists.d" />
      <File path="src\dlangui\widgets\menu.d" />

src/dlangui/widgets/editors.d

@@ -0,0 +1,85 @@
+// Written in the D programming language.
+
+/**
+DLANGUI library.
+
+This module contains implementation of editors.
+
+EditLine single line editor.
+
+Synopsis:
+
+----
+import dlangui.widgets.editors;
+
+----
+
+Copyright: Vadim Lopatin, 2014
+License:   $(WEB boost.org/LICENSE_1_0.txt, Boost License 1.0).
+Authors:   $(WEB coolreader.org, Vadim Lopatin)
+*/
+module dlangui.widgets.editors;
+
+import dlangui.widgets.widget;
+import dlangui.core.signals;
+
+/// editable plain text (multiline)
+class EditableContent {
+    this(bool multiline) {
+        _multiline = multiline;
+        _lines.length = 1; // initial state: single empty line
+    }
+    protected bool _multiline;
+    protected dchar[][] _lines;
+    /// returns all lines concatenated delimited by '\n'
+    @property dstring text() {
+        if (_lines.length == 0)
+            return "";
+        dchar[] buf;
+        foreach(item;_lines) {
+            if (buf.length)
+                buf ~= '\n';
+            buf ~= item;
+        }
+        return cast(dstring)buf;
+    }
+    @property EditableContent text(dstring newContent) {
+        _lines.length = 0;
+        // TODO: split into lines
+        _lines ~= newContent.dup;
+        return this;
+    }
+    /// returns line text
+    @property int length() { return cast(int)_lines.length; }
+    dstring opIndex(int index) {
+        return line(index);
+    }
+    /// returns line text by index
+    dstring line(int index) {
+        return _lines[index].dup;
+    }
+}
+
+/// single line editor
+class EditLine : Widget {
+    EditableContent _content;
+    this(string ID) {
+        super(ID);
+        _content = new EditableContent(false);
+    }
+    /// get widget text
+    override @property dstring text() { return _content.text; }
+    /// set text
+    override @property Widget text(dstring s) { 
+        _content.text = s; 
+        requestLayout();
+		return this;
+    }
+    /// set text
+    override @property Widget text(ref UIString s) { 
+        _content.text = s; 
+        requestLayout();
+		return this;
+    }
+}
+