304 lines
9.6 KiB
JavaScript
304 lines
9.6 KiB
JavaScript
var shallowClone = require('../clone').shallow;
|
|
|
|
var Token = require('../../tokenizer/token');
|
|
var Marker = require('../../tokenizer/marker');
|
|
|
|
function isInheritOnly(values) {
|
|
for (var i = 0, l = values.length; i < l; i++) {
|
|
var value = values[i][1];
|
|
|
|
if (value != 'inherit' && value != Marker.COMMA && value != Marker.FORWARD_SLASH)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function background(property, configuration, lastInMultiplex) {
|
|
var components = property.components;
|
|
var restored = [];
|
|
var needsOne, needsBoth;
|
|
|
|
function restoreValue(component) {
|
|
Array.prototype.unshift.apply(restored, component.value);
|
|
}
|
|
|
|
function isDefaultValue(component) {
|
|
var descriptor = configuration[component.name];
|
|
|
|
if (descriptor.doubleValues && descriptor.defaultValue.length == 1) {
|
|
return component.value[0][1] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][1] == descriptor.defaultValue[0] : true);
|
|
} else if (descriptor.doubleValues && descriptor.defaultValue.length != 1) {
|
|
return component.value[0][1] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][1] : component.value[0][1]) == descriptor.defaultValue[1];
|
|
} else {
|
|
return component.value[0][1] == descriptor.defaultValue;
|
|
}
|
|
}
|
|
|
|
for (var i = components.length - 1; i >= 0; i--) {
|
|
var component = components[i];
|
|
var isDefault = isDefaultValue(component);
|
|
|
|
if (component.name == 'background-clip') {
|
|
var originComponent = components[i - 1];
|
|
var isOriginDefault = isDefaultValue(originComponent);
|
|
|
|
needsOne = component.value[0][1] == originComponent.value[0][1];
|
|
|
|
needsBoth = !needsOne && (
|
|
(isOriginDefault && !isDefault) ||
|
|
(!isOriginDefault && !isDefault) ||
|
|
(!isOriginDefault && isDefault && component.value[0][1] != originComponent.value[0][1]));
|
|
|
|
if (needsOne) {
|
|
restoreValue(originComponent);
|
|
} else if (needsBoth) {
|
|
restoreValue(component);
|
|
restoreValue(originComponent);
|
|
}
|
|
|
|
i--;
|
|
} else if (component.name == 'background-size') {
|
|
var positionComponent = components[i - 1];
|
|
var isPositionDefault = isDefaultValue(positionComponent);
|
|
|
|
needsOne = !isPositionDefault && isDefault;
|
|
|
|
needsBoth = !needsOne &&
|
|
(isPositionDefault && !isDefault || !isPositionDefault && !isDefault);
|
|
|
|
if (needsOne) {
|
|
restoreValue(positionComponent);
|
|
} else if (needsBoth) {
|
|
restoreValue(component);
|
|
restored.unshift([Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]);
|
|
restoreValue(positionComponent);
|
|
} else if (positionComponent.value.length == 1) {
|
|
restoreValue(positionComponent);
|
|
}
|
|
|
|
i--;
|
|
} else {
|
|
if (isDefault || configuration[component.name].multiplexLastOnly && !lastInMultiplex)
|
|
continue;
|
|
|
|
restoreValue(component);
|
|
}
|
|
}
|
|
|
|
if (restored.length === 0 && property.value.length == 1 && property.value[0][1] == '0')
|
|
restored.push(property.value[0]);
|
|
|
|
if (restored.length === 0)
|
|
restored.push([Token.PROPERTY_VALUE, configuration[property.name].defaultValue]);
|
|
|
|
if (isInheritOnly(restored))
|
|
return [restored[0]];
|
|
|
|
return restored;
|
|
}
|
|
|
|
function borderRadius(property) {
|
|
if (property.multiplex) {
|
|
var horizontal = shallowClone(property);
|
|
var vertical = shallowClone(property);
|
|
|
|
for (var i = 0; i < 4; i++) {
|
|
var component = property.components[i];
|
|
|
|
var horizontalComponent = shallowClone(property);
|
|
horizontalComponent.value = [component.value[0]];
|
|
horizontal.components.push(horizontalComponent);
|
|
|
|
var verticalComponent = shallowClone(property);
|
|
// FIXME: only shorthand compactor (see breakup#borderRadius) knows that border radius
|
|
// longhands have two values, whereas tokenizer does not care about populating 2nd value
|
|
// if it's missing, hence this fallback
|
|
verticalComponent.value = [component.value[1] || component.value[0]];
|
|
vertical.components.push(verticalComponent);
|
|
}
|
|
|
|
var horizontalValues = fourValues(horizontal);
|
|
var verticalValues = fourValues(vertical);
|
|
|
|
if (horizontalValues.length == verticalValues.length &&
|
|
horizontalValues[0][1] == verticalValues[0][1] &&
|
|
(horizontalValues.length > 1 ? horizontalValues[1][1] == verticalValues[1][1] : true) &&
|
|
(horizontalValues.length > 2 ? horizontalValues[2][1] == verticalValues[2][1] : true) &&
|
|
(horizontalValues.length > 3 ? horizontalValues[3][1] == verticalValues[3][1] : true)) {
|
|
return horizontalValues;
|
|
} else {
|
|
return horizontalValues.concat([[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]).concat(verticalValues);
|
|
}
|
|
} else {
|
|
return fourValues(property);
|
|
}
|
|
}
|
|
|
|
function font(property, configuration) {
|
|
var components = property.components;
|
|
var restored = [];
|
|
var component;
|
|
var componentIndex = 0;
|
|
var fontFamilyIndex = 0;
|
|
|
|
if (property.value[0][1].indexOf(Marker.INTERNAL) === 0) {
|
|
property.value[0][1] = property.value[0][1].substring(Marker.INTERNAL.length);
|
|
return property.value;
|
|
}
|
|
|
|
// first four components are optional
|
|
while (componentIndex < 4) {
|
|
component = components[componentIndex];
|
|
|
|
if (component.value[0][1] != configuration[component.name].defaultValue) {
|
|
Array.prototype.push.apply(restored, component.value);
|
|
}
|
|
|
|
componentIndex++;
|
|
}
|
|
|
|
// then comes font-size
|
|
Array.prototype.push.apply(restored, components[componentIndex].value);
|
|
componentIndex++;
|
|
|
|
// then may come line-height
|
|
if (components[componentIndex].value[0][1] != configuration[components[componentIndex].name].defaultValue) {
|
|
Array.prototype.push.apply(restored, [[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]);
|
|
Array.prototype.push.apply(restored, components[componentIndex].value);
|
|
}
|
|
|
|
componentIndex++;
|
|
|
|
// then comes font-family
|
|
while (components[componentIndex].value[fontFamilyIndex]) {
|
|
restored.push(components[componentIndex].value[fontFamilyIndex]);
|
|
|
|
if (components[componentIndex].value[fontFamilyIndex + 1]) {
|
|
restored.push([Token.PROPERTY_VALUE, Marker.COMMA]);
|
|
}
|
|
|
|
fontFamilyIndex++;
|
|
}
|
|
|
|
if (isInheritOnly(restored)) {
|
|
return [restored[0]];
|
|
}
|
|
|
|
return restored;
|
|
}
|
|
|
|
function fourValues(property) {
|
|
var components = property.components;
|
|
var value1 = components[0].value[0];
|
|
var value2 = components[1].value[0];
|
|
var value3 = components[2].value[0];
|
|
var value4 = components[3].value[0];
|
|
|
|
if (value1[1] == value2[1] && value1[1] == value3[1] && value1[1] == value4[1]) {
|
|
return [value1];
|
|
} else if (value1[1] == value3[1] && value2[1] == value4[1]) {
|
|
return [value1, value2];
|
|
} else if (value2[1] == value4[1]) {
|
|
return [value1, value2, value3];
|
|
} else {
|
|
return [value1, value2, value3, value4];
|
|
}
|
|
}
|
|
|
|
function multiplex(restoreWith) {
|
|
return function (property, configuration) {
|
|
if (!property.multiplex)
|
|
return restoreWith(property, configuration, true);
|
|
|
|
var multiplexSize = 0;
|
|
var restored = [];
|
|
var componentMultiplexSoFar = {};
|
|
var i, l;
|
|
|
|
// At this point we don't know what's the multiplex size, e.g. how many background layers are there
|
|
for (i = 0, l = property.components[0].value.length; i < l; i++) {
|
|
if (property.components[0].value[i][1] == Marker.COMMA)
|
|
multiplexSize++;
|
|
}
|
|
|
|
for (i = 0; i <= multiplexSize; i++) {
|
|
var _property = shallowClone(property);
|
|
|
|
// We split multiplex into parts and restore them one by one
|
|
for (var j = 0, m = property.components.length; j < m; j++) {
|
|
var componentToClone = property.components[j];
|
|
var _component = shallowClone(componentToClone);
|
|
_property.components.push(_component);
|
|
|
|
// The trick is some properties has more than one value, so we iterate over values looking for
|
|
// a multiplex separator - a comma
|
|
for (var k = componentMultiplexSoFar[_component.name] || 0, n = componentToClone.value.length; k < n; k++) {
|
|
if (componentToClone.value[k][1] == Marker.COMMA) {
|
|
componentMultiplexSoFar[_component.name] = k + 1;
|
|
break;
|
|
}
|
|
|
|
_component.value.push(componentToClone.value[k]);
|
|
}
|
|
}
|
|
|
|
// No we can restore shorthand value
|
|
var lastInMultiplex = i == multiplexSize;
|
|
var _restored = restoreWith(_property, configuration, lastInMultiplex);
|
|
Array.prototype.push.apply(restored, _restored);
|
|
|
|
if (i < multiplexSize)
|
|
restored.push([Token.PROPERTY_VALUE, Marker.COMMA]);
|
|
}
|
|
|
|
return restored;
|
|
};
|
|
}
|
|
|
|
function withoutDefaults(property, configuration) {
|
|
var components = property.components;
|
|
var restored = [];
|
|
|
|
for (var i = components.length - 1; i >= 0; i--) {
|
|
var component = components[i];
|
|
var descriptor = configuration[component.name];
|
|
|
|
if (component.value[0][1] != descriptor.defaultValue || ('keepUnlessDefault' in descriptor) && !isDefault(components, configuration, descriptor.keepUnlessDefault)) {
|
|
restored.unshift(component.value[0]);
|
|
}
|
|
}
|
|
|
|
if (restored.length === 0)
|
|
restored.push([Token.PROPERTY_VALUE, configuration[property.name].defaultValue]);
|
|
|
|
if (isInheritOnly(restored))
|
|
return [restored[0]];
|
|
|
|
return restored;
|
|
}
|
|
|
|
function isDefault(components, configuration, propertyName) {
|
|
var component;
|
|
var i, l;
|
|
|
|
for (i = 0, l = components.length; i < l; i++) {
|
|
component = components[i];
|
|
|
|
if (component.name == propertyName && component.value[0][1] == configuration[propertyName].defaultValue) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
module.exports = {
|
|
background: background,
|
|
borderRadius: borderRadius,
|
|
font: font,
|
|
fourValues: fourValues,
|
|
multiplex: multiplex,
|
|
withoutDefaults: withoutDefaults
|
|
};
|