From 05c33f9e596c2cdf94479992b6c012cd770d57b5 Mon Sep 17 00:00:00 2001
From: Vadim Lopatin <buggins@fromru.com>
Date: Fri, 23 May 2014 10:56:10 +0400
Subject: [PATCH] GridWidget, part 1

---
 dlangui-monod-lib.dproj      |   1 +
 src/dlangui/widgets/grid.d   | 122 +++++++++++++++++++++++++++++++++++
 src/dlangui/widgets/widget.d |   9 ++-
 3 files changed, 130 insertions(+), 2 deletions(-)
 create mode 100644 src/dlangui/widgets/grid.d

diff --git a/dlangui-monod-lib.dproj b/dlangui-monod-lib.dproj
index 0713c5f1..48d956d8 100644
--- a/dlangui-monod-lib.dproj
+++ b/dlangui-monod-lib.dproj
@@ -102,5 +102,6 @@
     <Compile Include="src\index.d" />
     <Compile Include="src\api.d" />
     <Compile Include="src\screenshots.d" />
+    <Compile Include="src\dlangui\widgets\grid.d" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/dlangui/widgets/grid.d b/src/dlangui/widgets/grid.d
new file mode 100644
index 00000000..d9176508
--- /dev/null
+++ b/src/dlangui/widgets/grid.d
@@ -0,0 +1,122 @@
+module src.dlangui.widgets.grid;
+
+import dlangui.widgets.widget;
+
+/**
+ * Data provider for GridWidget.
+ */
+interface GridAdapter {
+	/// number of columns
+	@property int cols();
+	/// number of rows
+	@property int rows();
+	/// returns widget to draw cell at (col, row)
+	Widget cellWidget(int col, int row);
+	/// returns row header widget, null if no header
+	Widget rowHeader(int row);
+	/// returns column header widget, null if no header
+	Widget colHeader(int col);
+}
+
+/**
+ */
+class StringGridAdapter : GridAdapter {
+	protected int _cols;
+	protected int _rows;
+	protected dstring[][] _data;
+	protected dstring[] _rowTitles;
+	protected dstring[] _colTitles;
+	/// number of columns
+	@property int cols() { return _cols; }
+	/// number of columns
+	@property void cols(int v) { resize(v, _rows); }
+	/// number of rows
+	@property int rows() { return _rows; }
+	/// number of columns
+	@property void rows(int v) { resize(_cols, v); }
+
+	/// returns row header title
+	dstring rowTitle(int row) {
+		return _rowTitles[row];
+	}
+	/// set row header title
+	StringGridAdapter setRowTitle(int row, dstring title) {
+		_rowTitles[row] = title;
+		return this;
+	}
+	/// returns row header title
+	dstring colTitle(int col) {
+		return _colTitles[col];
+	}
+	/// set col header title
+	StringGridAdapter setColTitle(int col, dstring title) {
+		_colTitles[col] = title;
+		return this;
+	}
+	/// get cell text
+	dstring cellText(int col, int row) {
+		return _data[row][col];
+	}
+	/// set cell text
+	StringGridAdapter setCellText(int col, int row, dstring text) {
+		_data[row][col] = text;
+		return this;
+	}
+	/// set new size
+	void resize(int cols, int rows) {
+		if (cols == _cols && rows == _rows)
+			return;
+		_cols = cols;
+		_rows = rows;
+		_data.length = _rows;
+		for (int y = 0; y < _rows; y++)
+			_data[y].length = _cols;
+		_colTitles.length = _cols;
+		_rowTitles.length = _rows;
+	}
+	/// returns widget to draw cell at (col, row)
+	Widget cellWidget(int col, int row) { return null; }
+	/// returns row header widget, null if no header
+	Widget rowHeader(int row) { return null; }
+	/// returns column header widget, null if no header
+	Widget colHeader(int col) { return null; }
+}
+
+/**
+ * Multicolumn multirow view.
+ */
+class GridWidget : WidgetGroup {
+	protected GridAdapter _adapter;
+	/// when true, widget owns adapter and must destroy it itself.
+	protected bool _ownAdapter;
+	protected int _cols;
+	protected int _rows;
+	/// returns current grid adapter
+	@property GridAdapter adapter() { return _adapter; }
+	/// sets shared adapter (will not be destroyed on widget destroy)
+	@property GridWidget adapter(GridAdapter a) {
+		if (_ownAdapter && _adapter)
+			destroy(_adapter);
+		_ownAdapter = false;
+		_adapter = a;
+		return this;
+	}
+	/// sets own adapter (will be destroyed on widget destroy)
+	@property GridWidget ownAdapter(GridAdapter a) {
+		if (_ownAdapter && _adapter)
+			destroy(_adapter);
+		_adapter = a;
+		return this;
+	}
+	/// destroy own adapter
+	~this() {
+		if (_ownAdapter && _adapter)
+			destroy(_adapter);
+	}
+}
+
+/**
+ * Grid view with string data shown. All rows are of the same height.
+ */
+class StringGridWidget : GridWidget {
+}
diff --git a/src/dlangui/widgets/widget.d b/src/dlangui/widgets/widget.d
index 60d8847f..18742806 100644
--- a/src/dlangui/widgets/widget.d
+++ b/src/dlangui/widgets/widget.d
@@ -37,15 +37,16 @@ module dlangui.widgets.widget;
 
 public import dlangui.core.types;
 public import dlangui.core.events;
+public import dlangui.core.i18n;
 public import dlangui.widgets.styles;
+
 public import dlangui.graphics.drawbuf;
 public import dlangui.graphics.resources;
 public import dlangui.graphics.fonts;
-public import dlangui.core.i18n;
 
 public import dlangui.core.signals;
 
-import dlangui.platforms.common.platform;
+public import dlangui.platforms.common.platform;
 
 import std.algorithm;
 
@@ -117,6 +118,10 @@ enum CursorType {
 	Hand
 }
 
+/**
+ * Base class for all widgets.
+ * 
+ */
 class Widget {
     /// widget id
     protected string _id;