0991c06395
This patch makes it possible to set and get all possible flags that the PDF specification defines. Even though we do not support all possible annotation types and not all possible annotation flags yet, this general framework makes it easy to access all flags for each annotation such that annotation type implementations can use this information. We add constants for all possible annotation flags such that we do not need to hardcode the flags in the code anymore. The `isViewable()` and `isPrintable()` methods are now easier to read. Additionally, unit tests have been added to ensure correct behavior. This is another part of #5218.
731 lines
21 KiB
JavaScript
731 lines
21 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
/* globals PDFJS, Util, isDict, isName, stringToPDFString, warn, Dict, Stream,
|
|
stringToBytes, Promise, isArray, ObjectLoader, OperatorList,
|
|
isValidUrl, OPS, createPromiseCapability, AnnotationType,
|
|
stringToUTF8String, AnnotationBorderStyleType, ColorSpace,
|
|
AnnotationFlag, isInt */
|
|
|
|
'use strict';
|
|
|
|
var DEFAULT_ICON_SIZE = 22; // px
|
|
|
|
/**
|
|
* @class
|
|
* @alias AnnotationFactory
|
|
*/
|
|
function AnnotationFactory() {}
|
|
AnnotationFactory.prototype = /** @lends AnnotationFactory.prototype */ {
|
|
/**
|
|
* @param {XRef} xref
|
|
* @param {Object} ref
|
|
* @returns {Annotation}
|
|
*/
|
|
create: function AnnotationFactory_create(xref, ref) {
|
|
var dict = xref.fetchIfRef(ref);
|
|
if (!isDict(dict)) {
|
|
return;
|
|
}
|
|
|
|
// Determine the annotation's subtype.
|
|
var subtype = dict.get('Subtype');
|
|
subtype = isName(subtype) ? subtype.name : '';
|
|
|
|
// Return the right annotation object based on the subtype and field type.
|
|
var parameters = {
|
|
dict: dict,
|
|
ref: ref
|
|
};
|
|
|
|
switch (subtype) {
|
|
case 'Link':
|
|
return new LinkAnnotation(parameters);
|
|
|
|
case 'Text':
|
|
return new TextAnnotation(parameters);
|
|
|
|
case 'Widget':
|
|
var fieldType = Util.getInheritableProperty(dict, 'FT');
|
|
if (isName(fieldType) && fieldType.name === 'Tx') {
|
|
return new TextWidgetAnnotation(parameters);
|
|
}
|
|
return new WidgetAnnotation(parameters);
|
|
|
|
default:
|
|
warn('Unimplemented annotation type "' + subtype + '", ' +
|
|
'falling back to base annotation');
|
|
return new Annotation(parameters);
|
|
}
|
|
}
|
|
};
|
|
|
|
var Annotation = (function AnnotationClosure() {
|
|
// 12.5.5: Algorithm: Appearance streams
|
|
function getTransformMatrix(rect, bbox, matrix) {
|
|
var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix);
|
|
var minX = bounds[0];
|
|
var minY = bounds[1];
|
|
var maxX = bounds[2];
|
|
var maxY = bounds[3];
|
|
|
|
if (minX === maxX || minY === maxY) {
|
|
// From real-life file, bbox was [0, 0, 0, 0]. In this case,
|
|
// just apply the transform for rect
|
|
return [1, 0, 0, 1, rect[0], rect[1]];
|
|
}
|
|
|
|
var xRatio = (rect[2] - rect[0]) / (maxX - minX);
|
|
var yRatio = (rect[3] - rect[1]) / (maxY - minY);
|
|
return [
|
|
xRatio,
|
|
0,
|
|
0,
|
|
yRatio,
|
|
rect[0] - minX * xRatio,
|
|
rect[1] - minY * yRatio
|
|
];
|
|
}
|
|
|
|
function getDefaultAppearance(dict) {
|
|
var appearanceState = dict.get('AP');
|
|
if (!isDict(appearanceState)) {
|
|
return;
|
|
}
|
|
|
|
var appearance;
|
|
var appearances = appearanceState.get('N');
|
|
if (isDict(appearances)) {
|
|
var as = dict.get('AS');
|
|
if (as && appearances.has(as.name)) {
|
|
appearance = appearances.get(as.name);
|
|
}
|
|
} else {
|
|
appearance = appearances;
|
|
}
|
|
return appearance;
|
|
}
|
|
|
|
function Annotation(params) {
|
|
var dict = params.dict;
|
|
var data = this.data = {};
|
|
|
|
data.subtype = dict.get('Subtype').name;
|
|
|
|
this.setFlags(dict.get('F'));
|
|
|
|
this.setRectangle(dict.get('Rect'));
|
|
data.rect = this.rectangle;
|
|
|
|
this.setColor(dict.get('C'));
|
|
data.color = this.color;
|
|
|
|
this.borderStyle = data.borderStyle = new AnnotationBorderStyle();
|
|
this.setBorderStyle(dict);
|
|
|
|
this.appearance = getDefaultAppearance(dict);
|
|
data.hasAppearance = !!this.appearance;
|
|
data.id = params.ref.num;
|
|
}
|
|
|
|
Annotation.prototype = {
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
get viewable() {
|
|
if (this.flags) {
|
|
return !this.hasFlag(AnnotationFlag.INVISIBLE) &&
|
|
!this.hasFlag(AnnotationFlag.HIDDEN) &&
|
|
!this.hasFlag(AnnotationFlag.NOVIEW);
|
|
}
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
get printable() {
|
|
if (this.flags) {
|
|
return this.hasFlag(AnnotationFlag.PRINT) &&
|
|
!this.hasFlag(AnnotationFlag.INVISIBLE) &&
|
|
!this.hasFlag(AnnotationFlag.HIDDEN);
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Set the flags.
|
|
*
|
|
* @public
|
|
* @memberof Annotation
|
|
* @param {number} flags - Unsigned 32-bit integer specifying annotation
|
|
* characteristics
|
|
* @see {@link shared/util.js}
|
|
*/
|
|
setFlags: function Annotation_setFlags(flags) {
|
|
if (isInt(flags)) {
|
|
this.flags = flags;
|
|
} else {
|
|
this.flags = 0;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Check if a provided flag is set.
|
|
*
|
|
* @public
|
|
* @memberof Annotation
|
|
* @param {number} flag - Hexadecimal representation for an annotation
|
|
* characteristic
|
|
* @return {boolean}
|
|
* @see {@link shared/util.js}
|
|
*/
|
|
hasFlag: function Annotation_hasFlag(flag) {
|
|
if (this.flags) {
|
|
return (this.flags & flag) > 0;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Set the rectangle.
|
|
*
|
|
* @public
|
|
* @memberof Annotation
|
|
* @param {Array} rectangle - The rectangle array with exactly four entries
|
|
*/
|
|
setRectangle: function Annotation_setRectangle(rectangle) {
|
|
if (isArray(rectangle) && rectangle.length === 4) {
|
|
this.rectangle = Util.normalizeRect(rectangle);
|
|
} else {
|
|
this.rectangle = [0, 0, 0, 0];
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the color and take care of color space conversion.
|
|
*
|
|
* @public
|
|
* @memberof Annotation
|
|
* @param {Array} color - The color array containing either 0
|
|
* (transparent), 1 (grayscale), 3 (RGB) or
|
|
* 4 (CMYK) elements
|
|
*/
|
|
setColor: function Annotation_setColor(color) {
|
|
var rgbColor = new Uint8Array(3); // Black in RGB color space (default)
|
|
if (!isArray(color)) {
|
|
this.color = rgbColor;
|
|
return;
|
|
}
|
|
|
|
switch (color.length) {
|
|
case 0: // Transparent, which we indicate with a null value
|
|
this.color = null;
|
|
break;
|
|
|
|
case 1: // Convert grayscale to RGB
|
|
ColorSpace.singletons.gray.getRgbItem(color, 0, rgbColor, 0);
|
|
this.color = rgbColor;
|
|
break;
|
|
|
|
case 3: // Convert RGB percentages to RGB
|
|
ColorSpace.singletons.rgb.getRgbItem(color, 0, rgbColor, 0);
|
|
this.color = rgbColor;
|
|
break;
|
|
|
|
case 4: // Convert CMYK to RGB
|
|
ColorSpace.singletons.cmyk.getRgbItem(color, 0, rgbColor, 0);
|
|
this.color = rgbColor;
|
|
break;
|
|
|
|
default:
|
|
this.color = rgbColor;
|
|
break;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the border style (as AnnotationBorderStyle object).
|
|
*
|
|
* @public
|
|
* @memberof Annotation
|
|
* @param {Dict} borderStyle - The border style dictionary
|
|
*/
|
|
setBorderStyle: function Annotation_setBorderStyle(borderStyle) {
|
|
if (!isDict(borderStyle)) {
|
|
return;
|
|
}
|
|
if (borderStyle.has('BS')) {
|
|
var dict = borderStyle.get('BS');
|
|
var dictType;
|
|
|
|
if (!dict.has('Type') || (isName(dictType = dict.get('Type')) &&
|
|
dictType.name === 'Border')) {
|
|
this.borderStyle.setWidth(dict.get('W'));
|
|
this.borderStyle.setStyle(dict.get('S'));
|
|
this.borderStyle.setDashArray(dict.get('D'));
|
|
}
|
|
} else if (borderStyle.has('Border')) {
|
|
var array = borderStyle.get('Border');
|
|
if (isArray(array) && array.length >= 3) {
|
|
this.borderStyle.setHorizontalCornerRadius(array[0]);
|
|
this.borderStyle.setVerticalCornerRadius(array[1]);
|
|
this.borderStyle.setWidth(array[2]);
|
|
|
|
if (array.length === 4) { // Dash array available
|
|
this.borderStyle.setDashArray(array[3]);
|
|
}
|
|
}
|
|
} else {
|
|
// There are no border entries in the dictionary. According to the
|
|
// specification, we should draw a solid border of width 1 in that
|
|
// case, but Adobe Reader did not implement that part of the
|
|
// specification and instead draws no border at all, so we do the same.
|
|
// See also https://github.com/mozilla/pdf.js/issues/6179.
|
|
this.borderStyle.setWidth(0);
|
|
}
|
|
},
|
|
|
|
loadResources: function Annotation_loadResources(keys) {
|
|
return new Promise(function (resolve, reject) {
|
|
this.appearance.dict.getAsync('Resources').then(function (resources) {
|
|
if (!resources) {
|
|
resolve();
|
|
return;
|
|
}
|
|
var objectLoader = new ObjectLoader(resources.map,
|
|
keys,
|
|
resources.xref);
|
|
objectLoader.load().then(function() {
|
|
resolve(resources);
|
|
}, reject);
|
|
}, reject);
|
|
}.bind(this));
|
|
},
|
|
|
|
getOperatorList: function Annotation_getOperatorList(evaluator, task) {
|
|
|
|
if (!this.appearance) {
|
|
return Promise.resolve(new OperatorList());
|
|
}
|
|
|
|
var data = this.data;
|
|
|
|
var appearanceDict = this.appearance.dict;
|
|
var resourcesPromise = this.loadResources([
|
|
'ExtGState',
|
|
'ColorSpace',
|
|
'Pattern',
|
|
'Shading',
|
|
'XObject',
|
|
'Font'
|
|
// ProcSet
|
|
// Properties
|
|
]);
|
|
var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1];
|
|
var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0];
|
|
var transform = getTransformMatrix(data.rect, bbox, matrix);
|
|
var self = this;
|
|
|
|
return resourcesPromise.then(function(resources) {
|
|
var opList = new OperatorList();
|
|
opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]);
|
|
return evaluator.getOperatorList(self.appearance, task,
|
|
resources, opList).
|
|
then(function () {
|
|
opList.addOp(OPS.endAnnotation, []);
|
|
self.appearance.reset();
|
|
return opList;
|
|
});
|
|
});
|
|
}
|
|
};
|
|
|
|
Annotation.appendToOperatorList = function Annotation_appendToOperatorList(
|
|
annotations, opList, pdfManager, partialEvaluator, task, intent) {
|
|
|
|
function reject(e) {
|
|
annotationsReadyCapability.reject(e);
|
|
}
|
|
|
|
var annotationsReadyCapability = createPromiseCapability();
|
|
|
|
var annotationPromises = [];
|
|
for (var i = 0, n = annotations.length; i < n; ++i) {
|
|
if (intent === 'display' && annotations[i].viewable ||
|
|
intent === 'print' && annotations[i].printable) {
|
|
annotationPromises.push(
|
|
annotations[i].getOperatorList(partialEvaluator, task));
|
|
}
|
|
}
|
|
Promise.all(annotationPromises).then(function(datas) {
|
|
opList.addOp(OPS.beginAnnotations, []);
|
|
for (var i = 0, n = datas.length; i < n; ++i) {
|
|
var annotOpList = datas[i];
|
|
opList.addOpList(annotOpList);
|
|
}
|
|
opList.addOp(OPS.endAnnotations, []);
|
|
annotationsReadyCapability.resolve();
|
|
}, reject);
|
|
|
|
return annotationsReadyCapability.promise;
|
|
};
|
|
|
|
return Annotation;
|
|
})();
|
|
|
|
/**
|
|
* Contains all data regarding an annotation's border style.
|
|
*
|
|
* @class
|
|
*/
|
|
var AnnotationBorderStyle = (function AnnotationBorderStyleClosure() {
|
|
/**
|
|
* @constructor
|
|
* @private
|
|
*/
|
|
function AnnotationBorderStyle() {
|
|
this.width = 1;
|
|
this.style = AnnotationBorderStyleType.SOLID;
|
|
this.dashArray = [3];
|
|
this.horizontalCornerRadius = 0;
|
|
this.verticalCornerRadius = 0;
|
|
}
|
|
|
|
AnnotationBorderStyle.prototype = {
|
|
/**
|
|
* Set the width.
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {integer} width - The width
|
|
*/
|
|
setWidth: function AnnotationBorderStyle_setWidth(width) {
|
|
if (width === (width | 0)) {
|
|
this.width = width;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the style.
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {Object} style - The style object
|
|
* @see {@link shared/util.js}
|
|
*/
|
|
setStyle: function AnnotationBorderStyle_setStyle(style) {
|
|
if (!style) {
|
|
return;
|
|
}
|
|
switch (style.name) {
|
|
case 'S':
|
|
this.style = AnnotationBorderStyleType.SOLID;
|
|
break;
|
|
|
|
case 'D':
|
|
this.style = AnnotationBorderStyleType.DASHED;
|
|
break;
|
|
|
|
case 'B':
|
|
this.style = AnnotationBorderStyleType.BEVELED;
|
|
break;
|
|
|
|
case 'I':
|
|
this.style = AnnotationBorderStyleType.INSET;
|
|
break;
|
|
|
|
case 'U':
|
|
this.style = AnnotationBorderStyleType.UNDERLINE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the dash array.
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {Array} dashArray - The dash array with at least one element
|
|
*/
|
|
setDashArray: function AnnotationBorderStyle_setDashArray(dashArray) {
|
|
// We validate the dash array, but we do not use it because CSS does not
|
|
// allow us to change spacing of dashes. For more information, visit
|
|
// http://www.w3.org/TR/css3-background/#the-border-style.
|
|
if (isArray(dashArray) && dashArray.length > 0) {
|
|
// According to the PDF specification: the elements in a dashArray
|
|
// shall be numbers that are nonnegative and not all equal to zero.
|
|
var isValid = true;
|
|
var allZeros = true;
|
|
for (var i = 0, len = dashArray.length; i < len; i++) {
|
|
var element = dashArray[i];
|
|
var validNumber = (+element >= 0);
|
|
if (!validNumber) {
|
|
isValid = false;
|
|
break;
|
|
} else if (element > 0) {
|
|
allZeros = false;
|
|
}
|
|
}
|
|
if (isValid && !allZeros) {
|
|
this.dashArray = dashArray;
|
|
} else {
|
|
this.width = 0; // Adobe behavior when the array is invalid.
|
|
}
|
|
} else if (dashArray) {
|
|
this.width = 0; // Adobe behavior when the array is invalid.
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the horizontal corner radius (from a Border dictionary).
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {integer} radius - The horizontal corner radius
|
|
*/
|
|
setHorizontalCornerRadius:
|
|
function AnnotationBorderStyle_setHorizontalCornerRadius(radius) {
|
|
if (radius === (radius | 0)) {
|
|
this.horizontalCornerRadius = radius;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set the vertical corner radius (from a Border dictionary).
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {integer} radius - The vertical corner radius
|
|
*/
|
|
setVerticalCornerRadius:
|
|
function AnnotationBorderStyle_setVerticalCornerRadius(radius) {
|
|
if (radius === (radius | 0)) {
|
|
this.verticalCornerRadius = radius;
|
|
}
|
|
}
|
|
};
|
|
|
|
return AnnotationBorderStyle;
|
|
})();
|
|
|
|
var WidgetAnnotation = (function WidgetAnnotationClosure() {
|
|
|
|
function WidgetAnnotation(params) {
|
|
Annotation.call(this, params);
|
|
|
|
var dict = params.dict;
|
|
var data = this.data;
|
|
|
|
data.fieldValue = stringToPDFString(
|
|
Util.getInheritableProperty(dict, 'V') || '');
|
|
data.alternativeText = stringToPDFString(dict.get('TU') || '');
|
|
data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || '';
|
|
var fieldType = Util.getInheritableProperty(dict, 'FT');
|
|
data.fieldType = isName(fieldType) ? fieldType.name : '';
|
|
data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0;
|
|
this.fieldResources = Util.getInheritableProperty(dict, 'DR') || Dict.empty;
|
|
|
|
// Hide unsupported Widget signatures.
|
|
if (data.fieldType === 'Sig') {
|
|
warn('unimplemented annotation type: Widget signature');
|
|
this.setFlags(AnnotationFlag.HIDDEN);
|
|
}
|
|
|
|
// Building the full field name by collecting the field and
|
|
// its ancestors 'T' data and joining them using '.'.
|
|
var fieldName = [];
|
|
var namedItem = dict;
|
|
var ref = params.ref;
|
|
while (namedItem) {
|
|
var parent = namedItem.get('Parent');
|
|
var parentRef = namedItem.getRaw('Parent');
|
|
var name = namedItem.get('T');
|
|
if (name) {
|
|
fieldName.unshift(stringToPDFString(name));
|
|
} else if (parent && ref) {
|
|
// The field name is absent, that means more than one field
|
|
// with the same name may exist. Replacing the empty name
|
|
// with the '`' plus index in the parent's 'Kids' array.
|
|
// This is not in the PDF spec but necessary to id the
|
|
// the input controls.
|
|
var kids = parent.get('Kids');
|
|
var j, jj;
|
|
for (j = 0, jj = kids.length; j < jj; j++) {
|
|
var kidRef = kids[j];
|
|
if (kidRef.num === ref.num && kidRef.gen === ref.gen) {
|
|
break;
|
|
}
|
|
}
|
|
fieldName.unshift('`' + j);
|
|
}
|
|
namedItem = parent;
|
|
ref = parentRef;
|
|
}
|
|
data.fullName = fieldName.join('.');
|
|
}
|
|
|
|
Util.inherit(WidgetAnnotation, Annotation, {});
|
|
|
|
return WidgetAnnotation;
|
|
})();
|
|
|
|
var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() {
|
|
function TextWidgetAnnotation(params) {
|
|
WidgetAnnotation.call(this, params);
|
|
|
|
this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q');
|
|
this.data.annotationType = AnnotationType.WIDGET;
|
|
this.data.hasHtml = !this.data.hasAppearance && !!this.data.fieldValue;
|
|
}
|
|
|
|
Util.inherit(TextWidgetAnnotation, WidgetAnnotation, {
|
|
getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator,
|
|
task) {
|
|
if (this.appearance) {
|
|
return Annotation.prototype.getOperatorList.call(this, evaluator, task);
|
|
}
|
|
|
|
var opList = new OperatorList();
|
|
var data = this.data;
|
|
|
|
// Even if there is an appearance stream, ignore it. This is the
|
|
// behaviour used by Adobe Reader.
|
|
if (!data.defaultAppearance) {
|
|
return Promise.resolve(opList);
|
|
}
|
|
|
|
var stream = new Stream(stringToBytes(data.defaultAppearance));
|
|
return evaluator.getOperatorList(stream, task,
|
|
this.fieldResources, opList).
|
|
then(function () {
|
|
return opList;
|
|
});
|
|
}
|
|
});
|
|
|
|
return TextWidgetAnnotation;
|
|
})();
|
|
|
|
var TextAnnotation = (function TextAnnotationClosure() {
|
|
function TextAnnotation(params) {
|
|
Annotation.call(this, params);
|
|
|
|
var dict = params.dict;
|
|
var data = this.data;
|
|
|
|
var content = dict.get('Contents');
|
|
var title = dict.get('T');
|
|
data.annotationType = AnnotationType.TEXT;
|
|
data.content = stringToPDFString(content || '');
|
|
data.title = stringToPDFString(title || '');
|
|
data.hasHtml = true;
|
|
|
|
if (data.hasAppearance) {
|
|
data.name = 'NoIcon';
|
|
} else {
|
|
data.rect[1] = data.rect[3] - DEFAULT_ICON_SIZE;
|
|
data.rect[2] = data.rect[0] + DEFAULT_ICON_SIZE;
|
|
data.name = dict.has('Name') ? dict.get('Name').name : 'Note';
|
|
}
|
|
|
|
if (dict.has('C')) {
|
|
data.hasBgColor = true;
|
|
}
|
|
}
|
|
|
|
Util.inherit(TextAnnotation, Annotation, { });
|
|
|
|
return TextAnnotation;
|
|
})();
|
|
|
|
var LinkAnnotation = (function LinkAnnotationClosure() {
|
|
function LinkAnnotation(params) {
|
|
Annotation.call(this, params);
|
|
|
|
var dict = params.dict;
|
|
var data = this.data;
|
|
data.annotationType = AnnotationType.LINK;
|
|
data.hasHtml = true;
|
|
|
|
var action = dict.get('A');
|
|
if (action && isDict(action)) {
|
|
var linkType = action.get('S').name;
|
|
if (linkType === 'URI') {
|
|
var url = action.get('URI');
|
|
if (isName(url)) {
|
|
// Some bad PDFs do not put parentheses around relative URLs.
|
|
url = '/' + url.name;
|
|
} else if (url) {
|
|
url = addDefaultProtocolToUrl(url);
|
|
}
|
|
// TODO: pdf spec mentions urls can be relative to a Base
|
|
// entry in the dictionary.
|
|
if (!isValidUrl(url, false)) {
|
|
url = '';
|
|
}
|
|
// According to ISO 32000-1:2008, section 12.6.4.7,
|
|
// URI should to be encoded in 7-bit ASCII.
|
|
// Some bad PDFs may have URIs in UTF-8 encoding, see Bugzilla 1122280.
|
|
try {
|
|
data.url = stringToUTF8String(url);
|
|
} catch (e) {
|
|
// Fall back to a simple copy.
|
|
data.url = url;
|
|
}
|
|
} else if (linkType === 'GoTo') {
|
|
data.dest = action.get('D');
|
|
} else if (linkType === 'GoToR') {
|
|
var urlDict = action.get('F');
|
|
if (isDict(urlDict)) {
|
|
// We assume that the 'url' is a Filspec dictionary
|
|
// and fetch the url without checking any further
|
|
url = urlDict.get('F') || '';
|
|
}
|
|
|
|
// TODO: pdf reference says that GoToR
|
|
// can also have 'NewWindow' attribute
|
|
if (!isValidUrl(url, false)) {
|
|
url = '';
|
|
}
|
|
data.url = url;
|
|
data.dest = action.get('D');
|
|
} else if (linkType === 'Named') {
|
|
data.action = action.get('N').name;
|
|
} else {
|
|
warn('unrecognized link type: ' + linkType);
|
|
}
|
|
} else if (dict.has('Dest')) {
|
|
// simple destination link
|
|
var dest = dict.get('Dest');
|
|
data.dest = isName(dest) ? dest.name : dest;
|
|
}
|
|
}
|
|
|
|
// Lets URLs beginning with 'www.' default to using the 'http://' protocol.
|
|
function addDefaultProtocolToUrl(url) {
|
|
if (url && url.indexOf('www.') === 0) {
|
|
return ('http://' + url);
|
|
}
|
|
return url;
|
|
}
|
|
|
|
Util.inherit(LinkAnnotation, Annotation, { });
|
|
|
|
return LinkAnnotation;
|
|
})();
|