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Code Issues Releases Wiki Activity

Added support for the empty message to the list macro

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This commit is contained in:
Jeremy Ruston 2012-10-16 21:42:36 +01:00
parent 343a2c2340
commit dd6fddad01
1 changed files with 48 additions and 7 deletions
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55
core/modules/macros/list.js
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@ -45,9 +45,15 @@ exports.executeMacro = function() {
$tw.utils.pushTop(attributes["class"],this.classes);
}
this.listFrame = $tw.Tree.Element(this.isBlock ? "div" : "span",attributes,[]);
// Create each list element
for(var t=0; t<this.list.length; t++) {
this.listFrame.children.push(this.createListElement(this.list[t]));
// Create the list
if(this.list.length === 0) {
// Check for an empty list
this.listFrame.children = [this.getEmptyMessage()];
} else {
// Create the list
for(var t=0; t<this.list.length; t++) {
this.listFrame.children.push(this.createListElement(this.list[t]));
}
}
return this.listFrame;
};
@ -65,6 +71,17 @@ exports.getTiddlerList = function() {
this.list = this.wiki.filterTiddlers(filter,this.tiddlerTitle);
};
/*
Create and execute the nodes representing the empty message
*/
exports.getEmptyMessage = function() {
var nodes = this.wiki.parseText("text/x-tiddlywiki",this.params.emptyMessage).tree;
for(var c=0; c<nodes.length; c++) {
nodes[c].execute(this.parents,this.tiddlerTitle);
}
return $tw.Tree.Element("span",{},nodes);
};
/*
Create a list element representing a given tiddler
*/
@ -120,7 +137,7 @@ exports.createListElementMacro = function(title) {
/*
Remove a list element from the list, along with the attendant DOM nodes
*/
exports.removelistElement = function(index) {
exports.removeListElement = function(index) {
// Get the list element
var listElement = this.listFrame.children[index];
// Remove the dom node
@ -156,8 +173,32 @@ exports.refreshInDom = function(changes) {
return;
}
}
// Get the list of tiddlers
// Get the list of tiddlers, saving the previous length
var prevListLength = this.list.length;
this.getTiddlerList();
// Check if the list is empty
if(this.list.length === 0) {
// Check if it was empty before
if(prevListLength === 0) {
// If so, just refresh the empty message
this.listFrame.refreshInDom(changes);
return;
} else {
// If the list wasn't empty before, empty it
for(t=prevListLength-1; t>=0; t--) {
this.removeListElement(t);
}
// Insert the empty message
this.listFrame.children = [this.getEmptyMessage()];
this.listFrame.children[0].renderInDom(this.listFrame.domNode,this.listFrame.domNode.childNodes[0]);
return;
}
} else {
// If it is not empty now, but was empty previously, then remove the empty message
if(prevListLength === 0) {
this.removeListElement(0);
}
}
// Step through the list and adjust our child list elements appropriately
for(t=0; t<this.list.length; t++) {
// Check to see if the list element is already there
@ -170,7 +211,7 @@ exports.refreshInDom = function(changes) {
// Delete any list elements preceding the one we want
if(index > t) {
for(var n=index-1; n>=t; n--) {
this.removelistElement(n);
this.removeListElement(n);
}
}
// Refresh the node we're reusing
@ -180,7 +221,7 @@ exports.refreshInDom = function(changes) {
// Remove any left over elements
if(this.listFrame.children.length > this.list.length) {
for(t=this.listFrame.children.length-1; t>=this.list.length; t--) {
this.removeStoryElement(t);
this.removeListElement(t);
}
}
};