[7219] | 1 | /** |
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| 2 | * The check box marks a task complete. It is a simulated form field |
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| 3 | * with three states ... |
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| 4 | * 0=unchecked, 1=some children checked, 2=all children checked |
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| 5 | * When a task is clicked, the state of the nodes and parent and children |
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| 6 | * are updated, and this behavior cascades. |
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| 7 | * |
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| 8 | * @extends YAHOO.widget.TextNode |
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| 9 | * @constructor |
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| 10 | * @param oData {object} A string or object containing the data that will |
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| 11 | * be used to render this node. |
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| 12 | * @param oParent {Node} This node's parent node |
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| 13 | * @param expanded {boolean} The initial expanded/collapsed state |
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| 14 | * @param checked {boolean} The initial checked/unchecked state |
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| 15 | */ |
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| 16 | YAHOO.widget.TaskNode = function(oData, oParent, expanded, checked) { |
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| 17 | |
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| 18 | if (oData) { |
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| 19 | this.init(oData, oParent, expanded); |
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| 20 | this.setUpLabel(oData); |
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| 21 | if (checked && checked === true) { |
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| 22 | this.check(); |
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| 23 | } |
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| 24 | |
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| 25 | /* |
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| 26 | if (!this.tree.checkClickEvent) { |
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| 27 | this.tree.checkClickEvent = |
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| 28 | new YAHOO.util.CustomEvent("checkclick", this.tree); |
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| 29 | } |
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| 30 | */ |
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| 31 | } |
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| 32 | |
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| 33 | this.logger = new YAHOO.widget.LogWriter(this.toString()); |
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| 34 | }; |
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| 35 | |
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| 36 | YAHOO.widget.TaskNode.prototype = new YAHOO.widget.TextNode(); |
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| 37 | |
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| 38 | /** |
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| 39 | * True if checkstate is 1 (some children checked) or 2 (all children checked), |
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| 40 | * false if 0. |
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| 41 | * @type boolean |
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| 42 | */ |
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| 43 | YAHOO.widget.TaskNode.prototype.checked = false; |
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| 44 | |
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| 45 | /** |
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| 46 | * checkState |
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| 47 | * 0=unchecked, 1=some children checked, 2=all children checked |
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| 48 | * @type int |
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| 49 | */ |
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| 50 | YAHOO.widget.TaskNode.prototype.checkState = 0; |
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| 51 | |
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| 52 | /** |
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| 53 | * The id of the check element |
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| 54 | * @type string |
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| 55 | */ |
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| 56 | YAHOO.widget.TaskNode.prototype.getCheckElId = function() { |
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| 57 | return "ygtvcheck" + this.index; |
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| 58 | }; |
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| 59 | |
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| 60 | /** |
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| 61 | * Returns the check box element |
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| 62 | * @return the check html element (img) |
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| 63 | */ |
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| 64 | YAHOO.widget.TaskNode.prototype.getCheckEl = function() { |
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| 65 | return document.getElementById(this.getCheckElId()); |
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| 66 | }; |
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| 67 | |
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| 68 | /** |
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| 69 | * The style of the check element, derived from its current state |
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| 70 | * @return {string} the css style for the current check state |
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| 71 | */ |
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| 72 | YAHOO.widget.TaskNode.prototype.getCheckStyle = function() { |
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| 73 | return "ygtvcheck" + this.checkState; |
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| 74 | }; |
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| 75 | |
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| 76 | /** |
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| 77 | * Returns the link that will invoke this node's check toggle |
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| 78 | * @return {string} returns the link required to adjust the checkbox state |
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| 79 | */ |
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| 80 | YAHOO.widget.TaskNode.prototype.getCheckLink = function() { |
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| 81 | return "YAHOO.widget.TreeView.getNode(\'" + this.tree.id + "\'," + |
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| 82 | this.index + ").checkClick()"; |
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| 83 | }; |
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| 84 | |
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| 85 | /** |
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| 86 | * Invoked when the user clicks the check box |
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| 87 | */ |
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| 88 | YAHOO.widget.TaskNode.prototype.checkClick = function() { |
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| 89 | this.logger.log("previous checkstate: " + this.checkState); |
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| 90 | if (this.checkState === 0) { |
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| 91 | this.check(); |
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| 92 | } else { |
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| 93 | this.uncheck(); |
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| 94 | } |
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| 95 | |
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| 96 | // this.tree.checkClickEvent.fire(this); |
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| 97 | |
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| 98 | this.onCheckClick(); |
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| 99 | }; |
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| 100 | |
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| 101 | /** |
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| 102 | * Override to get the check click event |
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| 103 | */ |
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| 104 | YAHOO.widget.TaskNode.prototype.onCheckClick = function() { |
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| 105 | this.logger.log("check was clicked"); |
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| 106 | } |
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| 107 | |
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| 108 | /** |
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| 109 | * Refresh the state of this node's parent, and cascade up. |
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| 110 | */ |
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| 111 | YAHOO.widget.TaskNode.prototype.updateParent = function() { |
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| 112 | var p = this.parent; |
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| 113 | |
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| 114 | if (!p || !p.updateParent) { |
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| 115 | this.logger.log("Abort udpate parent: " + this.index); |
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| 116 | return; |
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| 117 | } |
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| 118 | |
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| 119 | var somethingChecked = false; |
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| 120 | var somethingNotChecked = false; |
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| 121 | |
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| 122 | for (var i=0;i< p.children.length;++i) { |
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| 123 | if (p.children[i].checked) { |
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| 124 | somethingChecked = true; |
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| 125 | // checkState will be 1 if the child node has unchecked children |
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| 126 | if (p.children[i].checkState == 1) { |
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| 127 | somethingNotChecked = true; |
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| 128 | } |
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| 129 | } else { |
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| 130 | somethingNotChecked = true; |
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| 131 | } |
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| 132 | } |
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| 133 | |
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| 134 | if (somethingChecked) { |
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| 135 | p.setCheckState( (somethingNotChecked) ? 1 : 2 ); |
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| 136 | } else { |
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| 137 | p.setCheckState(0); |
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| 138 | } |
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| 139 | |
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| 140 | p.updateCheckHtml(); |
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| 141 | p.updateParent(); |
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| 142 | }; |
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| 143 | |
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| 144 | /** |
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| 145 | * If the node has been rendered, update the html to reflect the current |
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| 146 | * state of the node. |
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| 147 | */ |
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| 148 | YAHOO.widget.TaskNode.prototype.updateCheckHtml = function() { |
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| 149 | if (this.parent && this.parent.childrenRendered) { |
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| 150 | this.getCheckEl().className = this.getCheckStyle(); |
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| 151 | } |
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| 152 | }; |
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| 153 | |
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| 154 | /** |
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| 155 | * Updates the state. The checked property is true if the state is 1 or 2 |
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| 156 | * |
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| 157 | * @param the new check state |
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| 158 | */ |
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| 159 | YAHOO.widget.TaskNode.prototype.setCheckState = function(state) { |
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| 160 | this.checkState = state; |
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| 161 | this.checked = (state > 0); |
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| 162 | }; |
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| 163 | |
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| 164 | /** |
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| 165 | * Check this node |
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| 166 | */ |
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| 167 | YAHOO.widget.TaskNode.prototype.check = function() { |
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| 168 | this.logger.log("check"); |
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| 169 | this.setCheckState(2); |
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| 170 | for (var i=0; i<this.children.length; ++i) { |
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| 171 | this.children[i].check(); |
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| 172 | } |
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| 173 | this.updateCheckHtml(); |
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| 174 | this.updateParent(); |
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| 175 | }; |
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| 176 | |
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| 177 | /** |
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| 178 | * Uncheck this node |
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| 179 | */ |
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| 180 | YAHOO.widget.TaskNode.prototype.uncheck = function() { |
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| 181 | this.setCheckState(0); |
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| 182 | for (var i=0; i<this.children.length; ++i) { |
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| 183 | this.children[i].uncheck(); |
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| 184 | } |
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| 185 | this.updateCheckHtml(); |
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| 186 | this.updateParent(); |
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| 187 | }; |
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| 188 | |
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| 189 | // Overrides YAHOO.widget.TextNode |
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| 190 | YAHOO.widget.TaskNode.prototype.getNodeHtml = function() { |
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| 191 | this.logger.log("Generating html"); |
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| 192 | var sb = new Array(); |
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| 193 | |
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| 194 | sb[sb.length] = '<table border="0" cellpadding="0" cellspacing="0">'; |
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| 195 | sb[sb.length] = '<tr>'; |
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| 196 | |
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| 197 | for (i=0;i<this.depth;++i) { |
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| 198 | sb[sb.length] = '<td class="' + this.getDepthStyle(i) + '"> </td>'; |
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| 199 | } |
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| 200 | |
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| 201 | sb[sb.length] = '<td'; |
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| 202 | sb[sb.length] = ' id="' + this.getToggleElId() + '"'; |
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| 203 | sb[sb.length] = ' class="' + this.getStyle() + '"'; |
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| 204 | if (this.hasChildren(true)) { |
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| 205 | sb[sb.length] = ' onmouseover="this.className='; |
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| 206 | sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\''; |
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| 207 | sb[sb.length] = this.tree.id + '\',' + this.index + ').getHoverStyle()"'; |
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| 208 | sb[sb.length] = ' onmouseout="this.className='; |
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| 209 | sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\''; |
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| 210 | sb[sb.length] = this.tree.id + '\',' + this.index + ').getStyle()"'; |
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| 211 | } |
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| 212 | sb[sb.length] = ' onclick="javascript:' + this.getToggleLink() + '"> '; |
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| 213 | sb[sb.length] = '</td>'; |
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| 214 | |
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| 215 | // check box |
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| 216 | sb[sb.length] = '<td'; |
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| 217 | sb[sb.length] = ' id="' + this.getCheckElId() + '"'; |
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| 218 | sb[sb.length] = ' class="' + this.getCheckStyle() + '"'; |
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| 219 | sb[sb.length] = ' onclick="javascript:' + this.getCheckLink() + '">'; |
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| 220 | sb[sb.length] = ' </td>'; |
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| 221 | |
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| 222 | |
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| 223 | sb[sb.length] = '<td>'; |
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| 224 | sb[sb.length] = '<a'; |
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| 225 | sb[sb.length] = ' id="' + this.labelElId + '"'; |
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| 226 | sb[sb.length] = ' class="' + this.labelStyle + '"'; |
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| 227 | sb[sb.length] = ' href="' + this.href + '"'; |
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| 228 | sb[sb.length] = ' target="' + this.target + '"'; |
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| 229 | if (this.hasChildren(true)) { |
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| 230 | sb[sb.length] = ' onmouseover="document.getElementById(\''; |
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| 231 | sb[sb.length] = this.getToggleElId() + '\').className='; |
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| 232 | sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\''; |
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| 233 | sb[sb.length] = this.tree.id + '\',' + this.index + ').getHoverStyle()"'; |
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| 234 | sb[sb.length] = ' onmouseout="document.getElementById(\''; |
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| 235 | sb[sb.length] = this.getToggleElId() + '\').className='; |
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| 236 | sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\''; |
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| 237 | sb[sb.length] = this.tree.id + '\',' + this.index + ').getStyle()"'; |
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| 238 | } |
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| 239 | sb[sb.length] = ' >'; |
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| 240 | sb[sb.length] = this.label; |
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| 241 | sb[sb.length] = '</a>'; |
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| 242 | sb[sb.length] = '</td>'; |
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| 243 | sb[sb.length] = '</tr>'; |
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| 244 | sb[sb.length] = '</table>'; |
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| 245 | |
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| 246 | return sb.join(""); |
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| 247 | |
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| 248 | }; |
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| 249 | |
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| 250 | YAHOO.widget.TaskNode.prototype.toString = function() { |
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| 251 | return "TaskNode (" + this.index + ") " + this.label; |
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| 252 | }; |
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| 253 | |
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