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111 lines
3.0 KiB
111 lines
3.0 KiB
2 years ago
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// namespaces
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var dwvOemr = dwvOemr || {};
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dwvOemr.gui = dwvOemr.gui || {};
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/**
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* Undo base gui.
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* @constructor
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*/
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dwvOemr.gui.Undo = function (app)
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{
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/**
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* Setup the undo HTML.
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*/
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this.setup = function ()
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{
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var paragraph = document.createElement("p");
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paragraph.appendChild(document.createTextNode("History:"));
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paragraph.appendChild(document.createElement("br"));
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var select = document.createElement("select");
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select.className = "history_list";
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select.name = "history_list";
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select.multiple = "multiple";
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paragraph.appendChild(select);
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// node
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var node = app.getElement("history");
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// clear it
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while(node.hasChildNodes()) {
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node.removeChild(node.firstChild);
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}
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// append
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node.appendChild(paragraph);
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// refresh
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dwvOemr.gui.refreshElement(node);
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};
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/**
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* Clear the command list of the undo HTML.
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*/
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this.initialise = function ()
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{
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var select = app.getElement("history_list");
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if ( select && select.length !== 0 ) {
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for( var i = select.length - 1; i >= 0; --i)
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{
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select.remove(i);
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}
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}
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// refresh
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dwvOemr.gui.refreshElement(select);
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};
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/**
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* Add a command to the undo HTML.
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* @param {String} commandName The name of the command to add.
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*/
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this.addCommandToUndoHtml = function (commandName)
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{
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var select = app.getElement("history_list");
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// remove undone commands
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var count = select.length - (select.selectedIndex+1);
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if( count > 0 )
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{
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for( var i = 0; i < count; ++i)
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{
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select.remove(select.length-1);
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}
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}
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// add new option
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var option = document.createElement("option");
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option.text = commandName;
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option.value = commandName;
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select.add(option);
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// increment selected index
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select.selectedIndex++;
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// refresh
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dwvOemr.gui.refreshElement(select);
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};
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/**
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* Enable the last command of the undo HTML.
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* @param {Boolean} enable Flag to enable or disable the command.
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*/
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this.enableLastInUndoHtml = function (enable)
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{
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var select = app.getElement("history_list");
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// enable or not (order is important)
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var option;
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if( enable )
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{
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// increment selected index
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select.selectedIndex++;
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// enable option
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option = select.options[select.selectedIndex];
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option.disabled = false;
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}
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else
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{
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// disable option
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option = select.options[select.selectedIndex];
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option.disabled = true;
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// decrement selected index
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select.selectedIndex--;
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}
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// refresh
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dwvOemr.gui.refreshElement(select);
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};
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}; // class dwvOemr.gui.Undo
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