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Merge pull request #9191 from timvandermeij/pushbuttons

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Button widget annotations: implement support for pushbuttons
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Tim van der Meij 2017-11-27 22:31:07 +01:00 • committed by GitHub
commit 3e34eb31d9
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6 changed files with 100 additions and 39 deletions
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91
src/core/annotation.js
View file

@ -732,45 +732,70 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
this.data.checkBox = !this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
if (this.data.checkBox) {
if (!isName(this.data.fieldValue)) {
return;
}
this.data.fieldValue = this.data.fieldValue.name;
}
this.data.radioButton = this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
if (this.data.radioButton) {
this.data.fieldValue = this.data.buttonValue = null;
this.data.pushButton = this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
// The parent field's `V` entry holds a `Name` object with the appearance
// state of whichever child field is currently in the "on" state.
let fieldParent = params.dict.get('Parent');
if (isDict(fieldParent) && fieldParent.has('V')) {
let fieldParentValue = fieldParent.get('V');
if (isName(fieldParentValue)) {
this.data.fieldValue = fieldParentValue.name;
}
}
if (this.data.checkBox) {
this._processCheckBox();
} else if (this.data.radioButton) {
this._processRadioButton(params);
} else if (this.data.pushButton) {
this._processPushButton(params);
} else {
warn('Invalid field flags for button widget annotation');
}
}
// The button's value corresponds to its appearance state.
let appearanceStates = params.dict.get('AP');
if (!isDict(appearanceStates)) {
return;
}
let normalAppearanceState = appearanceStates.get('N');
if (!isDict(normalAppearanceState)) {
return;
}
let keys = normalAppearanceState.getKeys();
for (let i = 0, ii = keys.length; i < ii; i++) {
if (keys[i] !== 'Off') {
this.data.buttonValue = keys[i];
break;
}
_processCheckBox() {
if (!isName(this.data.fieldValue)) {
return;
}
this.data.fieldValue = this.data.fieldValue.name;
}
_processRadioButton(params) {
this.data.fieldValue = this.data.buttonValue = null;
// The parent field's `V` entry holds a `Name` object with the appearance
// state of whichever child field is currently in the "on" state.
let fieldParent = params.dict.get('Parent');
if (isDict(fieldParent) && fieldParent.has('V')) {
let fieldParentValue = fieldParent.get('V');
if (isName(fieldParentValue)) {
this.data.fieldValue = fieldParentValue.name;
}
}
// The button's value corresponds to its appearance state.
let appearanceStates = params.dict.get('AP');
if (!isDict(appearanceStates)) {
return;
}
let normalAppearanceState = appearanceStates.get('N');
if (!isDict(normalAppearanceState)) {
return;
}
let keys = normalAppearanceState.getKeys();
for (let i = 0, ii = keys.length; i < ii; i++) {
if (keys[i] !== 'Off') {
this.data.buttonValue = keys[i];
break;
}
}
}
_processPushButton(params) {
if (!params.dict.has('A')) {
warn('Push buttons without action dictionaries are not supported');
return;
}
Catalog.parseDestDictionary({
destDict: params.dict,
resultObj: this.data,
docBaseUrl: params.pdfManager.docBaseUrl,
});
}
}

22
src/display/annotation_layer.js
View file

@ -61,8 +61,7 @@ class AnnotationElementFactory {
} else if (parameters.data.checkBox) {
return new CheckboxWidgetAnnotationElement(parameters);
}
warn('Unimplemented button widget annotation: pushbutton');
break;
return new PushButtonWidgetAnnotationElement(parameters);
case 'Ch':
return new ChoiceWidgetAnnotationElement(parameters);
}
@ -543,6 +542,25 @@ class RadioButtonWidgetAnnotationElement extends WidgetAnnotationElement {
}
}
class PushButtonWidgetAnnotationElement extends LinkAnnotationElement {
/**
* Render the push button widget annotation's HTML element
* in the empty container.
*
* @public
* @memberof PushButtonWidgetAnnotationElement
* @returns {HTMLSectionElement}
*/
render() {
// The rendering and functionality of a push button widget annotation is
// equal to that of a link annotation, but may have more functionality, such
// as performing actions on form fields (resetting, submitting, et cetera).
let container = super.render();
container.className = 'buttonWidgetAnnotation pushButton';
return container;
}
}
class ChoiceWidgetAnnotationElement extends WidgetAnnotationElement {
constructor(parameters) {
super(parameters, parameters.renderInteractiveForms);