1 | package gov.va.med.edp.widget
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2 | {
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3 | import flash.display.Graphics;
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4 |
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5 | import mx.containers.BoxDirection;
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6 | import mx.controls.TabBar;
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7 | import mx.core.ClassFactory;
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8 | import mx.core.EdgeMetrics;
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9 | import mx.core.IFlexDisplayObject;
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10 | import mx.core.mx_internal;
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11 | import mx.styles.CSSStyleDeclaration;
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12 | import mx.styles.StyleManager;
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13 |
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14 | use namespace mx_internal;
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15 |
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16 | /**
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17 | * Name of CSS style declaration that specifies the styles to use for the text
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18 | * of the selected tab navigation item.
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19 | *
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20 | * @default "selectedLinkStyle"
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21 | */
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22 | [Style(name="selectedTabTextStyleName", type="String", inherit="no")]
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23 |
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24 | /**
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25 | * Name of CSS style declaration that specifies the styles to use for the tab
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26 | * navigation items.
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27 | *
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28 | * @default "LinkButtonTab"
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29 | */
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30 | [Style(name="tabStyleName", type="String", inherit="no")]
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31 |
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32 | /**
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33 | * Background color of the LinkButton control as you press it.
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34 | *
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35 | * @default 0xCDFFC1
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36 | */
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37 | [Style(name="selectionColor", type="uint", format="Color", inherit="yes")]
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38 |
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39 | /**
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40 | * Separator color used by the default separator skin.
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41 | *
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42 | * @default 0xC4CCCC
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43 | */
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44 | [Style(name="separatorColor", type="uint", format="Color", inherit="yes")]
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45 |
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46 | /**
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47 | * Separator pixel width, in pixels.
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48 | *
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49 | * @default 1
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50 | */
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51 | [Style(name="separatorWidth", type="Number", format="Length", inherit="yes")]
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52 |
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53 | /**
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54 | * Number of pixels between tab navigation items in the horizontal direction.
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55 | *
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56 | * @default 8
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57 | */
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58 | [Style(name="horizontalGap", type="Number", format="Length", inherit="no")]
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59 |
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60 | /**
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61 | * Number of pixels between tab navigation items in the vertical direction.
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62 | *
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63 | * @default 8
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64 | */
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65 | [Style(name="verticalGap", type="Number", format="Length", inherit="no")]
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66 |
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67 | [AccessibilityClass(implementation="gov.va.med.edp.widget.accessibility.LinkButtonTabBarAccImpl")]
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68 |
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69 | [DefaultProperty("dataProvider")]
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70 |
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71 | [MaxChildren(0)]
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72 |
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73 | public class LinkButtonTabBar extends TabBar
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74 | {
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75 | mx_internal static var createAccessibilityImplementation:Function;
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76 |
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77 | private static var classConstructed:Boolean = classConstruct();
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78 |
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79 | private static function classConstruct():Boolean {
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80 | // If there is no CSS definition for our style,
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81 | // then create one and set the default value.
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82 | if (!StyleManager.getStyleDeclaration(".selectedLinkStyle"))
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83 | {
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84 | var linkStyle:CSSStyleDeclaration = new CSSStyleDeclaration();
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85 | linkStyle.defaultFactory = function():void {
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86 | this.color = 0xAAB3B3;
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87 | this.textRollOverColor = 0xAAB3B3;
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88 | }
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89 | StyleManager.setStyleDeclaration(".selectedLinkStyle", linkStyle, true);
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90 | }
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91 |
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92 | if (!StyleManager.getStyleDeclaration("LinkButtonTabBar"))
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93 | {
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94 | var style:CSSStyleDeclaration = new CSSStyleDeclaration();
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95 | style.defaultFactory = function():void {
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96 | this.tabStyleName = "LinkButtonTab";
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97 |
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98 | this.selectedTabTextStyleName = "selectedLinkStyle";
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99 |
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100 | this.separatorColor = 0xC4CCCC;
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101 | this.separatorWidth = 1;
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102 | this.selectionColor = 0x0000FF;
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103 |
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104 | this.horizontalGap = 8;
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105 | this.verticalGap = 8;
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106 | }
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107 | StyleManager.setStyleDeclaration("LinkButtonTabBar", style, true);
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108 | }
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109 | return true;
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110 | }
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111 |
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112 | public function LinkButtonTabBar()
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113 | {
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114 | super();
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115 | navItemFactory = new ClassFactory(LinkButtonTab);
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116 | }
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117 |
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118 | override protected function initializeAccessibility():void
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119 | {
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120 | if (LinkButtonTabBar.createAccessibilityImplementation != null)
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121 | LinkButtonTabBar.createAccessibilityImplementation(this);
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122 | }
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123 |
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124 | override protected function updateDisplayList(unscaledWidth:Number,
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125 | unscaledHeight:Number):void
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126 | {
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127 | // The super method will lay out the LinkButtons.
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128 | super.updateDisplayList(unscaledWidth, unscaledHeight);
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129 |
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130 | var separatorThickness:Number = getStyle("separatorWidth");
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131 | if (separatorThickness == 0 || separatorThickness == 0) return;
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132 |
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133 | var separatorColor:uint = getStyle("separatorColor");
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134 |
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135 | var vm:EdgeMetrics = viewMetricsAndPadding;
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136 |
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137 | var horizontalGap:Number = getStyle("horizontalGap");
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138 | var verticalGap:Number = getStyle("verticalGap");
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139 |
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140 | var barHeight:Number = unscaledHeight - (vm.top + vm.bottom);
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141 | var barWidth:Number = unscaledWidth - (vm.left + vm.right);
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142 |
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143 | var g:Graphics = graphics;
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144 | g.clear();
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145 |
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146 | g.lineStyle(separatorThickness, separatorColor);
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147 |
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148 | var isVertical:Boolean = direction == BoxDirection.VERTICAL;
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149 |
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150 | var x:Number;
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151 | var y:Number;
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152 | var h:Number = isVertical ? verticalGap : barHeight;
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153 | var w:Number = isVertical ? barWidth : horizontalGap;
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154 |
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155 | // paint the separators.
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156 | var n:int = numChildren - 1;
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157 | for (var i:int = 0; i < n; i++)
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158 | {
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159 | var child:IFlexDisplayObject = IFlexDisplayObject(getChildAt(i));
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160 |
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161 | if (isVertical)
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162 | {
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163 | x = child.x;
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164 | y = child.y + child.height;
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165 | g.moveTo(x + 4, y + h / 2);
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166 | g.lineTo(x + w - 4, y + h / 2);
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167 | } else {
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168 | x = child.x + child.width;
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169 | y = child.y;
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170 | g.moveTo(x + w / 2, y + 6);
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171 | g.lineTo(x + w / 2, y + h - 5);
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172 | }
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173 | }
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174 | }
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175 |
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176 | override public function styleChanged(styleProp:String):void {
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177 | super.styleChanged(styleProp);
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178 |
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179 | // Check to see if style changed.
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180 | if (styleProp == "separatorColor" || styleProp == "separatorWidth" || styleProp == "selectionColor")
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181 | {
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182 | invalidateDisplayList();
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183 | return;
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184 | }
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185 | }
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186 |
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187 | }
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188 | }
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