From 2dbe98bb98dc8b7b1e4a927d1c99f88c4836b469 Mon Sep 17 00:00:00 2001
From: rlx <0x0073@0x2620.org>
Date: Thu, 22 Mar 2012 20:04:35 +0000
Subject: [PATCH] add chart widget

---
 source/Ox.UI/js/List/Ox.Chart.js | 138 +++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 source/Ox.UI/js/List/Ox.Chart.js

diff --git a/source/Ox.UI/js/List/Ox.Chart.js b/source/Ox.UI/js/List/Ox.Chart.js
new file mode 100644
index 00000000..7b202654
--- /dev/null
+++ b/source/Ox.UI/js/List/Ox.Chart.js
@@ -0,0 +1,138 @@
+'use strict';
+
+Ox.Chart = function(options, self) {
+
+    self = self || {};
+    var that = Ox.Element({}, self)
+        .defaults({
+            color: [128, 128, 128],
+            data: {},
+            formatKey: null,
+            keyAlign: 'right',
+            keyWidth: 128,
+            rows: 1,
+            sort: {key: 'value', operator: '-'},
+            title: '',
+            width: 512
+        })
+        .options(options || {})
+        .addClass('OxChart')
+        .css({
+            width: self.options.width + 'px',
+            height: 16 + Ox.len(self.options.data) * 16 + 'px',
+            overflowY: 'hidden'
+        });
+
+    self.sort = {};
+    Ox.forEach(self.options.data, function(value, key) {
+        self.sort[key] = key.replace(/(\d+)/g, function(number) {
+            return Ox.pad(number, 16);
+        });
+    });
+
+    self.keys = Object.keys(self.options.data);
+    self.items = self.keys.map(function(key) {
+            return {key: key, value: self.options.data[key]};
+        })
+        .sort(function(a, b) {
+            var key = self.options.sort.key,
+                aValue = key == 'key' ? self.sort[a.key] : a.value,
+                bValue = key == 'key' ? self.sort[b.key] : b.value;
+            return aValue < bValue ? (self.options.sort.operator == '+' ? -1 : 1)
+                : aValue > bValue ? (self.options.sort.operator == '+' ? 1 : -1)
+                : self.sort[a.key] < self.sort[b.key] ? -1
+                : self.sort[a.key] > self.sort[b.key] ? 1
+                : 0;
+        });
+    self.values = self.items.map(function(item) {
+        return item.value;
+    });
+    self.max = Ox.max(self.values);
+    self.sum = Ox.sum(self.values);
+    self.valueWidth = self.options.width - self.options.keyWidth;
+    self.$title = Ox.Bar({size: 16})
+        .append(
+            $('<div>')
+                .css({margin: '1px 0 0 4px'})
+                .html(self.options.title)
+        )
+        .appendTo(that);
+    self.$chart = $('<div>')
+        .css({position: 'absolute', top: '16px'})
+        .append(renderChart())
+        .appendTo(that);
+
+    function getColumns() {
+        return [
+            {
+                align: self.options.keyAlign,
+                format: self.options.formatKey,
+                id: 'key',
+                width: self.options.keyWidth,
+                visible: true,
+            },
+            {
+                format: renderValue,
+                id: 'value',
+                width: self.valueWidth,
+                visible: true
+            }
+        ];
+    }
+
+    function renderChart() {
+        return Ox.TextList({
+                columns: getColumns(),
+                items: self.items,
+                max: 0,
+                min: 0,
+                pageLength: self.items.length,
+                sort: [self.options.sort],
+                width: self.options.width
+            })
+            .css({
+                left: 0,
+                top: 0,
+                width: self.options.width + 'px',
+                height: self.items.length * 16 + 'px'
+            });
+    }
+
+    function renderValue(value, data) {
+        var color = Ox.isFunction(self.options.color)
+                ? self.options.color(data.key)
+                : self.options.color,
+            $element = Ox.Element({
+                element: '<div>',
+                tooltip: Ox.formatNumber(value)
+                    + ' (' + Ox.formatPercent(value * self.options.rows, self.sum, 2) + ')'
+            })
+            .css({
+                width: Math.round(value / self.max * self.valueWidth) + 'px',
+                height: '14px',
+                borderRadius: '4px',
+                marginLeft: '-4px',
+            });
+        ['moz', 'o', 'webkit'].forEach(function(browser) {
+            $element.css({
+                backgroundImage: '-' + browser
+                    + '-linear-gradient(top, rgb(' + color.map(function(v) {
+                        return Ox.limit(v + 16, 0, 255);
+                    }).join(', ') + '), rgb(' + color.map(function(v) {
+                        return Ox.limit(v - 16, 0, 255);
+                    }) + '))'
+            });
+        });
+        return $element;
+    }
+
+    self.setOption = function(key, value) {
+        if (key == 'width') {
+            self.$chart.empty();
+            renderChart();
+        }
+    }
+
+    return that;
+
+};