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PropertyView.js
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PropertyView.js
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var Backbone = require('backbone');
module.exports = Backbone.View.extend({
template: _.template(`
<div class="<%= ppfx %>field">
<span id='<%= pfx %>input-holder'></span>
</div>
<div style="clear:both"></div>`),
templateLabel: _.template(`
<div class="<%= pfx %>label">
<span class="<%= pfx %>icon <%= icon %>" title="<%= info %>">
<%= label %>
</span>
<b class="<%= pfx %>clear">⨯</b>
</div>`),
events: {
'change': 'valueUpdated'
},
initialize(o) {
this.config = o.config || {};
this.em = this.config.em;
this.pfx = this.config.stylePrefix || '';
this.ppfx = this.config.pStylePrefix || '';
this.target = o.target || {};
this.propTarget = o.propTarget || {};
this.onChange = o.onChange || {};
this.onInputRender = o.onInputRender || {};
this.customValue = o.customValue || {};
this.defaultValue = this.model.get('defaults');
this.property = this.model.get('property');
this.input = this.$input = null;
const pfx = this.pfx;
this.className = pfx + 'property';
this.inputHolderId = '#' + pfx + 'input-holder';
this.sector = this.model.collection && this.model.collection.sector;
if(!this.model.get('value'))
this.model.set('value', this.model.get('defaults'));
this.listenTo(this.propTarget, 'update', this.targetUpdated);
this.listenTo(this.model, 'destroy remove', this.remove);
this.listenTo(this.model, 'change:value', this.valueChanged);
this.listenTo(this.model, 'targetUpdated', this.targetUpdated);
this.listenTo(this.model, 'change:visible', this.updateVisibility);
this.listenTo(this.model, 'change:status', this.updateStatus);
this.events[`click .${pfx}clear`] = 'clear';
this.delegateEvents();
},
updateStatus() {
const status = this.model.get('status');
const pfx = this.pfx;
const ppfx = this.ppfx;
const config = this.config;
const updatedCls = `${ppfx}color-hl`;
const computedCls = `${ppfx}color-warn`;
const labelEl = this.$el.find(`> .${pfx}label`);
const clearStyle = this.getClearEl().style;
labelEl.removeClass(`${updatedCls} ${computedCls}`);
clearStyle.display = 'none';
switch (status) {
case 'updated':
labelEl.addClass(updatedCls);
if (config.clearProperties) {
clearStyle.display = 'inline';
}
break;
case 'computed':
labelEl.addClass(computedCls);
break;
}
},
/**
* Clear the property
*/
clear() {
const target = this.getTargetModel();
target.removeStyle(this.model.get('property'));
this.targetUpdated();
},
/**
* Get clear element
* @return {HTMLElement}
*/
getClearEl() {
return this.el.querySelector(`.${this.pfx}clear`);
},
/**
* Returns selected target which should have 'style' property
* @deprecated
* @return {Model|null}
*/
getTarget() {
return this.propTarget && this.propTarget.model;
},
/**
* Returns Styleable model
* @return {Model|null}
*/
getTargetModel() {
return this.propTarget && this.propTarget.model;
},
/**
* Returns helper Styleable model
* @return {Model|null}
*/
getHelperModel() {
return this.propTarget && this.propTarget.helper;
},
/**
* Fired when the input value is updated
*/
valueUpdated() {
this.model.set('value', this.getInputValue());
this.elementUpdated();
},
/**
* Fired when the element of the property is updated
*/
elementUpdated() {
this.model.set('status', 'updated');
},
/**
* Fired when the target is changed
* */
targetUpdated() {
if (!this.checkVisibility()) {
return;
}
let value = '';
let status = '';
let targetValue = this.getTargetValue({ignoreDefault: 1});
let defaultValue = this.getDefaultValue();
let computedValue = this.getComputedValue();
const config = this.config;
const em = config.em;
const model = this.model;
if (targetValue) {
value = targetValue;
if (config.highlightChanged) {
status = 'updated';
}
} else if (computedValue && config.showComputed &&
computedValue != defaultValue) {
value = computedValue;
if (config.highlightComputed) {
status = 'computed';
}
} else {
value = defaultValue;
status = '';
}
//value = this.tryFetchFromFunction(value);
this.setValue(value, 1);
this.model.set('status', status);
if (em) {
em.trigger('styleManager:change', this);
em.trigger(`styleManager:change:${model.get('property')}`, this);
}
/*
if(this.getTarget()) {
if(!this.sameValue()){
this.renderInputRequest();
}
}*/
},
checkVisibility() {
var result = 1;
// Check if need to hide the property
if (this.config.hideNotStylable) {
if (!this.isTargetStylable() || !this.isComponentStylable()) {
this.hide();
result = 0;
} else {
this.show();
}
// Sector is not passed to Composite and Stack types
if (this.sector) {
this.sector.trigger('updateVisibility');
}
}
return result;
},
/**
* Checks if the value from selected component is the
* same of the value of the model
*
* @return {Boolean}
* */
sameValue() {
return this.getComponentValue() == this.getValueForTarget();
},
/**
* Get the value from the selected component of this property
* @return {String}
* @deprecated use getTargetValue
* */
getComponentValue() {
var propModel = this.model;
var target = this.getTargetModel();
if(!target)
return;
var targetProp = target.get('style')[this.property];
if(targetProp)
this.componentValue = targetProp;
else
this.componentValue = this.defaultValue + (this.unit || ''); // todo model
// Check if wrap inside function is required
if (propModel.get('functionName')) {
var v = this.fetchFromFunction(this.componentValue);
if(v)
this.componentValue = v;
}
// This allow to ovveride the normal flow of selecting component value,
// useful in composite properties
if(this.customValue && typeof this.customValue === "function"){
var index = propModel.collection.indexOf(propModel);
var t = this.customValue(this, index);
if(t)
this.componentValue = t;
}
return this.componentValue;
},
/**
* Refactor of getComponentValue
* @param {Object} [opts] Options
* @param {Boolean} [options.fetchFromFunction]
* @param {Boolean} [options.ignoreDefault]
* @return string
* @private
*/
getTargetValue(opts = {}) {
var result;
var model = this.model;
var target = this.getTargetModel();
var customFetchValue = this.customValue;
if (!target) {
return result;
}
result = target.getStyle()[model.get('property')];
if (!result && !opts.ignoreDefault) {
result = this.getDefaultValue();
}
if (typeof customFetchValue == 'function' && !opts.ignoreCustomValue) {
let index = model.collection.indexOf(model);
let customValue = customFetchValue(this, index);
if (customValue) {
result = customValue;
}
}
return result;
},
/**
* Returns default value
* @return {String}
* @private
*/
getDefaultValue() {
return this.model.get('defaults');
},
/**
* Returns computed value
* @return {String}
* @private
*/
getComputedValue() {
let computed = this.propTarget.computed;
const valid = this.config.validComputed;
const property = this.model.get('property');
return computed && valid.indexOf(property) >= 0 && computed[property];
},
/**
* Fetch the string from function type value
* @param {String} v Function type value
*
* @return {String}
* */
fetchFromFunction(v) {
return v.substring(v.indexOf("(") + 1, v.lastIndexOf(")"));
},
tryFetchFromFunction(value) {
if (!this.model.get('functionName')) {
return value;
}
var valueStr = value + '';
var start = valueStr.indexOf("(") + 1;
var end = valueStr.lastIndexOf(")");
return valueStr.substring(start, end);
},
/**
* Returns the value composed for the target
* TODO put here the check for functionName
* @return {string}
*/
getValueForTarget() {
return this.model.get('value');
},
/**
* Returns value from input
* @return {string}
*/
getInputValue() {
return this.$input ? this.$input.val() : '';
},
/**
* Triggers when the 'value' of the model changes, so I have to update
* the target model
* @param {Object} e Events
* @param {Mixed} val Value
* @param {Object} opt Options
* */
valueChanged(e, val, opt) {
var mVal = this.getValueForTarget();
var em = this.config.em;
var model = this.model;
if(this.$input)
this.setValue(mVal);
if(!this.getTarget())
return;
// Check if component is allowed to be styled
if (!this.isTargetStylable() || !this.isComponentStylable()) {
return;
}
const value = this.model.getFullValue();
var target = this.getTarget();
var onChange = this.onChange;
if(onChange && typeof onChange === "function"){
onChange(target, this, opt);
}else
this.updateTargetStyle(value, null, opt);
if(em){
em.trigger('component:update', model);
em.trigger('component:styleUpdate', model);
em.trigger('component:styleUpdate:' + model.get('property'), model);
}
},
/**
* Update target style
* @param {string} value
* @param {string} name
* @param {Object} opts
*/
updateTargetStyle(value, name = '', opts = {}) {
const property = name || this.model.get('property');
const target = this.getTarget();
const style = target.getStyle();
if (value) {
style[property] = value;
} else {
delete style[property];
}
target.setStyle(style, opts);
// Helper is used by `states` like ':hover' to show its preview
const helper = this.getHelperModel();
helper && helper.setStyle(style, opts);
},
/**
* Check if target is stylable with this property
* The target could be the Component as the CSS Rule
* @return {Boolean}
*/
isTargetStylable() {
var stylable = this.getTarget().get('stylable');
// Stylable could also be an array indicating with which property
// the target could be styled
if(stylable instanceof Array)
stylable = _.indexOf(stylable, this.property) >= 0;
return stylable;
},
/**
* Check if the selected component is stylable with this property
* The target could be the Component as the CSS Rule
* @return {Boolean}
*/
isComponentStylable() {
var em = this.em;
var component = em && em.get('selectedComponent');
if (!component) {
return true;
}
var stylable = component.get('stylable');
// Stylable could also be an array indicating with which property
// the target could be styled
if(stylable instanceof Array){
stylable = _.indexOf(stylable, this.property) >= 0;
}
return stylable;
},
/**
* Set value to the input
* @param {String} value
* @param {Boolean} force
* */
setValue(value, force) {
var f = force === 0 ? 0 : 1;
var def = this.model.get('defaults');
var v = this.model.get('value') || def;
if(value || f){
v = value;
}
if(this.$input)
this.$input.val(v);
this.model.set({value: v}, {silent: true});
},
updateVisibility() {
this.el.style.display = this.model.get('visible') ?
'block' : 'none';
},
show() {
this.model.set('visible', 1);
},
hide() {
this.model.set('visible', 0);
},
renderLabel() {
let model = this.model;
this.$el.html(this.templateLabel({
pfx: this.pfx,
ppfx: this.ppfx,
icon: model.get('icon'),
info: model.get('info'),
label: model.get('name'),
}));
},
/**
* Render field property
* */
renderField() {
this.renderTemplate();
this.renderInput();
delete this.componentValue;
},
/**
* Render loaded template
* */
renderTemplate() {
this.$el.append( this.template({
pfx : this.pfx,
ppfx : this.ppfx,
icon : this.model.get('icon'),
info : this.model.get('info'),
label : this.model.get('name'),
}));
},
/**
* Renders input, to override
* */
renderInput() {
if(!this.$input){
this.$input = $('<input>', {
placeholder: this.model.get('defaults'),
type: 'text'
});
this.$el.find(this.inputHolderId).html(this.$input);
}
this.setValue(this.componentValue, 0);
},
/**
* Request to render input of the property
* */
renderInputRequest() {
this.renderInput();
},
/**
* Clean input
* */
cleanValue() {
this.setValue('');
},
render() {
this.renderLabel();
this.renderField();
this.$el.attr('class', this.className);
this.updateStatus();
return this;
},
});