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85 lines
2.6 KiB
85 lines
2.6 KiB
/**
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* Abstract shape element. Shape element represents some visual vector or raster object.
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* @constructor
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* @param {String} name Tag name of the element.
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* @param {Object} config Set of parameters to initialize element with.
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* @param {Object} style Object with styles to set on element initialization.
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*/
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jvm.AbstractShapeElement = function(name, config, style){
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this.style = style || {};
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this.style.current = {};
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this.isHovered = false;
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this.isSelected = false;
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this.updateStyle();
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};
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/**
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* Set hovered state to the element. Hovered state means mouse cursor is over element. Styles will be updates respectively.
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* @param {Boolean} isHovered <code>true</code> to make element hovered, <code>false</code> otherwise.
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*/
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jvm.AbstractShapeElement.prototype.setHovered = function(isHovered){
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if (this.isHovered !== isHovered) {
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this.isHovered = isHovered;
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this.updateStyle();
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}
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};
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/**
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* Set selected state to the element. Styles will be updates respectively.
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* @param {Boolean} isSelected <code>true</code> to make element selected, <code>false</code> otherwise.
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*/
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jvm.AbstractShapeElement.prototype.setSelected = function(isSelected){
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if (this.isSelected !== isSelected) {
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this.isSelected = isSelected;
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this.updateStyle();
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jvm.$(this.node).trigger('selected', [isSelected]);
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}
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};
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/**
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* Set element's style.
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* @param {Object|String} property Could be string to set only one property or object to set several style properties at once.
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* @param {String} value Value to set in case only one property should be set.
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*/
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jvm.AbstractShapeElement.prototype.setStyle = function(property, value){
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var styles = {};
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if (typeof property === 'object') {
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styles = property;
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} else {
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styles[property] = value;
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}
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jvm.$.extend(this.style.current, styles);
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this.updateStyle();
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};
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jvm.AbstractShapeElement.prototype.updateStyle = function(){
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var attrs = {};
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jvm.AbstractShapeElement.mergeStyles(attrs, this.style.initial);
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jvm.AbstractShapeElement.mergeStyles(attrs, this.style.current);
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if (this.isHovered) {
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jvm.AbstractShapeElement.mergeStyles(attrs, this.style.hover);
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}
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if (this.isSelected) {
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jvm.AbstractShapeElement.mergeStyles(attrs, this.style.selected);
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if (this.isHovered) {
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jvm.AbstractShapeElement.mergeStyles(attrs, this.style.selectedHover);
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}
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}
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this.set(attrs);
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};
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jvm.AbstractShapeElement.mergeStyles = function(styles, newStyles){
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var key;
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newStyles = newStyles || {};
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for (key in newStyles) {
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if (newStyles[key] === null) {
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delete styles[key];
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} else {
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styles[key] = newStyles[key];
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}
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}
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} |