mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-08-27 19:42:50 +00:00
![Simon Huber](/assets/img/avatar_default.png)
* Fix: eventcatcher widget - variables can be undefined * Fix: selectedNode can be an svg where offsetLeft ... are undefined * Make check for offsetLeft short * remove second collectDOMNodeVariables
160 lines
4.7 KiB
JavaScript
160 lines
4.7 KiB
JavaScript
/*\
|
|
title: $:/core/modules/widgets/eventcatcher.js
|
|
type: application/javascript
|
|
module-type: widget
|
|
|
|
Event handler widget
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
var Widget = require("$:/core/modules/widgets/widget.js").widget;
|
|
|
|
var EventWidget = function(parseTreeNode,options) {
|
|
this.initialise(parseTreeNode,options);
|
|
};
|
|
|
|
/*
|
|
Inherit from the base widget class
|
|
*/
|
|
EventWidget.prototype = new Widget();
|
|
|
|
/*
|
|
Render this widget into the DOM
|
|
*/
|
|
EventWidget.prototype.render = function(parent,nextSibling) {
|
|
var self = this;
|
|
// Remember parent
|
|
this.parentDomNode = parent;
|
|
// Compute attributes and execute state
|
|
this.computeAttributes();
|
|
this.execute();
|
|
// Create element
|
|
var tag = this.parseTreeNode.isBlock ? "div" : "span";
|
|
if(this.elementTag && $tw.config.htmlUnsafeElements.indexOf(this.elementTag) === -1) {
|
|
tag = this.elementTag;
|
|
}
|
|
var domNode = this.document.createElement(tag);
|
|
this.domNode = domNode;
|
|
// Assign classes
|
|
this.assignDomNodeClasses();
|
|
// Add our event handler
|
|
$tw.utils.each(this.types,function(type) {
|
|
domNode.addEventListener(type,function(event) {
|
|
var selector = self.getAttribute("selector"),
|
|
matchSelector = self.getAttribute("matchSelector"),
|
|
actions = self.getAttribute("$"+type) || self.getAttribute("actions-"+type),
|
|
stopPropagation = self.getAttribute("stopPropagation","onaction"),
|
|
selectedNode = event.target,
|
|
selectedNodeRect,
|
|
catcherNodeRect,
|
|
variables = {};
|
|
// Firefox can fire dragover and dragenter events on text nodes instead of their parents
|
|
if(selectedNode.nodeType === 3) {
|
|
selectedNode = selectedNode.parentNode;
|
|
}
|
|
// Check that the selected node matches any matchSelector
|
|
if(matchSelector && !$tw.utils.domMatchesSelector(selectedNode,matchSelector)) {
|
|
return false;
|
|
}
|
|
if(selector) {
|
|
// Search ancestors for a node that matches the selector
|
|
while(!$tw.utils.domMatchesSelector(selectedNode,selector) && selectedNode !== domNode) {
|
|
selectedNode = selectedNode.parentNode;
|
|
}
|
|
// Exit if we didn't find one
|
|
if(selectedNode === domNode) {
|
|
return false;
|
|
}
|
|
// Only set up variables if we have actions to invoke
|
|
if(actions) {
|
|
variables = $tw.utils.collectDOMVariables(selectedNode,self.domNode,event);
|
|
}
|
|
}
|
|
// Execute our actions with the variables
|
|
if(actions) {
|
|
// Add a variable for the modifier key
|
|
variables.modifier = $tw.keyboardManager.getEventModifierKeyDescriptor(event);
|
|
// Add a variable for the mouse button
|
|
if("button" in event) {
|
|
if(event.button === 0) {
|
|
variables["event-mousebutton"] = "left";
|
|
} else if(event.button === 1) {
|
|
variables["event-mousebutton"] = "middle";
|
|
} else if(event.button === 2) {
|
|
variables["event-mousebutton"] = "right";
|
|
}
|
|
}
|
|
variables["event-type"] = event.type.toString();
|
|
if(typeof event.detail === "object" && !!event.detail) {
|
|
$tw.utils.each(event.detail,function(detailValue,detail) {
|
|
variables["event-detail-" + detail] = detailValue.toString();
|
|
});
|
|
} else if(!!event.detail) {
|
|
variables["event-detail"] = event.detail.toString();
|
|
}
|
|
self.invokeActionString(actions,self,event,variables);
|
|
}
|
|
if((actions && stopPropagation === "onaction") || stopPropagation === "always") {
|
|
event.preventDefault();
|
|
event.stopPropagation();
|
|
return true;
|
|
}
|
|
return false;
|
|
},false);
|
|
});
|
|
// Insert element
|
|
parent.insertBefore(domNode,nextSibling);
|
|
this.renderChildren(domNode,null);
|
|
this.domNodes.push(domNode);
|
|
};
|
|
|
|
/*
|
|
Compute the internal state of the widget
|
|
*/
|
|
EventWidget.prototype.execute = function() {
|
|
var self = this;
|
|
// Get attributes that require a refresh on change
|
|
this.types = [];
|
|
$tw.utils.each(this.attributes,function(value,key) {
|
|
if(key.charAt(0) === "$") {
|
|
self.types.push(key.slice(1));
|
|
}
|
|
});
|
|
if(!this.types.length) {
|
|
this.types = this.getAttribute("events","").split(" ");
|
|
}
|
|
this.elementTag = this.getAttribute("tag");
|
|
// Make child widgets
|
|
this.makeChildWidgets();
|
|
};
|
|
|
|
EventWidget.prototype.assignDomNodeClasses = function() {
|
|
var classes = this.getAttribute("class","").split(" ");
|
|
classes.push("tc-eventcatcher");
|
|
this.domNode.className = classes.join(" ");
|
|
};
|
|
|
|
/*
|
|
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
|
|
*/
|
|
EventWidget.prototype.refresh = function(changedTiddlers) {
|
|
var changedAttributes = this.computeAttributes(),
|
|
changedAttributesCount = $tw.utils.count(changedAttributes);
|
|
if(changedAttributesCount === 1 && changedAttributes["class"]) {
|
|
this.assignDomNodeClasses();
|
|
} else if(changedAttributesCount > 0) {
|
|
this.refreshSelf();
|
|
return true;
|
|
}
|
|
return this.refreshChildren(changedTiddlers);
|
|
};
|
|
|
|
exports.eventcatcher = EventWidget;
|
|
|
|
})();
|