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Re-ordering the PDFPresentationMode code so that the "public" functions are placed towards the top of the file

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This commit is contained in:
Jonas Jenwald 2015-02-03 12:17:57 +01:00
parent d5089f42fa
commit 4edee12e92
1 changed files with 118 additions and 118 deletions
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236
web/pdf_presentation_mode.js
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@ -68,53 +68,6 @@ var PDFPresentationMode = {
}
},
get isFullscreen() {
return !!(document.fullscreenElement ||
document.mozFullScreen ||
document.webkitIsFullScreen ||
document.msFullscreenElement);
},
/**
* @private
*/
_fullscreenChange: function pdfPresentationModeFullscreenChange() {
var self = PDFPresentationMode;
if (self.isFullscreen) {
self._enter();
} else {
self._exit();
}
},
/**
* Used to initialize a timeout when requesting Presentation Mode,
* i.e. when the browser is requested to enter fullscreen mode.
* This timeout is used to prevent the current page from being scrolled
* partially, or completely, out of view when entering Presentation Mode.
* NOTE: This issue seems limited to certain zoom levels (e.g. 'page-width').
* @private
*/
_setSwitchInProgress: function pdfPresentationMode_setSwitchInProgress() {
if (this.switchInProgress) {
clearTimeout(this.switchInProgress);
}
this.switchInProgress = setTimeout(function switchInProgressTimeout() {
delete this.switchInProgress;
this._notifyStateChange();
}.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
},
/**
* @private
*/
_resetSwitchInProgress: function pdfPresentationMode_resetSwitchInProgress() {
if (this.switchInProgress) {
clearTimeout(this.switchInProgress);
delete this.switchInProgress;
}
},
/**
* Request the browser to enter fullscreen mode.
* @returns {boolean} Indicating if the request was successful.
@ -147,6 +100,73 @@ var PDFPresentationMode = {
return true;
},
/**
* Switches page when the user scrolls (using a scroll wheel or a touchpad)
* with large enough motion, to prevent accidental page switches.
* @param {number} delta - The delta value from the mouse event.
*/
mouseScroll: function pdfPresentationModeMouseScroll(delta) {
if (!this.initialized && !this.active) {
return;
}
var MOUSE_SCROLL_COOLDOWN_TIME = 50;
var PAGE_SWITCH_THRESHOLD = 120;
var PageSwitchDirection = {
UP: -1,
DOWN: 1
};
var currentTime = (new Date()).getTime();
var storedTime = this.mouseScrollTimeStamp;
// If we've already switched page, avoid accidentally switching page again.
if (currentTime > storedTime &&
currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
return;
}
// If the user changes scroll direction, reset the accumulated scroll delta.
if ((this.mouseScrollDelta > 0 && delta < 0) ||
(this.mouseScrollDelta < 0 && delta > 0)) {
this._resetMouseScrollState();
}
this.mouseScrollDelta += delta;
if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
var pageSwitchDirection = (this.mouseScrollDelta > 0) ?
PageSwitchDirection.UP : PageSwitchDirection.DOWN;
var page = PDFViewerApplication.page;
this._resetMouseScrollState();
// If we're already on the first/last page, we don't need to do anything.
if ((page === 1 && pageSwitchDirection === PageSwitchDirection.UP) ||
(page === PDFViewerApplication.pagesCount &&
pageSwitchDirection === PageSwitchDirection.DOWN)) {
return;
}
PDFViewerApplication.page = (page + pageSwitchDirection);
this.mouseScrollTimeStamp = currentTime;
}
},
get isFullscreen() {
return !!(document.fullscreenElement ||
document.mozFullScreen ||
document.webkitIsFullScreen ||
document.msFullscreenElement);
},
/**
* @private
*/
_fullscreenChange: function pdfPresentationModeFullscreenChange() {
var self = PDFPresentationMode;
if (self.isFullscreen) {
self._enter();
} else {
self._exit();
}
},
/**
* @private
*/
@ -160,6 +180,34 @@ var PDFPresentationMode = {
window.dispatchEvent(event);
},
/**
* Used to initialize a timeout when requesting Presentation Mode,
* i.e. when the browser is requested to enter fullscreen mode.
* This timeout is used to prevent the current page from being scrolled
* partially, or completely, out of view when entering Presentation Mode.
* NOTE: This issue seems limited to certain zoom levels (e.g. 'page-width').
* @private
*/
_setSwitchInProgress: function pdfPresentationMode_setSwitchInProgress() {
if (this.switchInProgress) {
clearTimeout(this.switchInProgress);
}
this.switchInProgress = setTimeout(function switchInProgressTimeout() {
delete this.switchInProgress;
this._notifyStateChange();
}.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
},
/**
* @private
*/
_resetSwitchInProgress: function pdfPresentationMode_resetSwitchInProgress() {
if (this.switchInProgress) {
clearTimeout(this.switchInProgress);
delete this.switchInProgress;
}
},
/**
* @private
*/
@ -222,35 +270,6 @@ var PDFPresentationMode = {
}
},
/**
* @private
*/
_showControls: function pdfPresentationModeShowControls() {
var self = PDFPresentationMode;
if (self.controlsTimeout) {
clearTimeout(self.controlsTimeout);
} else {
self.container.classList.add(SELECTOR);
}
self.controlsTimeout = setTimeout(function showControlsTimeout() {
self.container.classList.remove(SELECTOR);
delete self.controlsTimeout;
}, DELAY_BEFORE_HIDING_CONTROLS);
},
/**
* @private
*/
_hideControls: function pdfPresentationModeHideControls() {
var self = PDFPresentationMode;
if (!self.controlsTimeout) {
return;
}
clearTimeout(self.controlsTimeout);
self.container.classList.remove(SELECTOR);
delete self.controlsTimeout;
},
/**
* @private
*/
@ -282,51 +301,32 @@ var PDFPresentationMode = {
},
/**
* Switches page when the user scrolls (using a scroll wheel or a touchpad)
* with large enough motion, to prevent accidental page switches.
* @param {number} delta - The delta value from the mouse event.
* @private
*/
mouseScroll: function pdfPresentationModeMouseScroll(delta) {
if (!this.initialized && !this.active) {
_showControls: function pdfPresentationModeShowControls() {
var self = PDFPresentationMode;
if (self.controlsTimeout) {
clearTimeout(self.controlsTimeout);
} else {
self.container.classList.add(SELECTOR);
}
self.controlsTimeout = setTimeout(function showControlsTimeout() {
self.container.classList.remove(SELECTOR);
delete self.controlsTimeout;
}, DELAY_BEFORE_HIDING_CONTROLS);
},
/**
* @private
*/
_hideControls: function pdfPresentationModeHideControls() {
var self = PDFPresentationMode;
if (!self.controlsTimeout) {
return;
}
var MOUSE_SCROLL_COOLDOWN_TIME = 50;
var PAGE_SWITCH_THRESHOLD = 120;
var PageSwitchDirection = {
UP: -1,
DOWN: 1
};
var currentTime = (new Date()).getTime();
var storedTime = this.mouseScrollTimeStamp;
// If we've already switched page, avoid accidentally switching page again.
if (currentTime > storedTime &&
currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
return;
}
// If the user changes scroll direction, reset the accumulated scroll delta.
if ((this.mouseScrollDelta > 0 && delta < 0) ||
(this.mouseScrollDelta < 0 && delta > 0)) {
this._resetMouseScrollState();
}
this.mouseScrollDelta += delta;
if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
var pageSwitchDirection = (this.mouseScrollDelta > 0) ?
PageSwitchDirection.UP : PageSwitchDirection.DOWN;
var page = PDFViewerApplication.page;
this._resetMouseScrollState();
// If we're already on the first/last page, we don't need to do anything.
if ((page === 1 && pageSwitchDirection === PageSwitchDirection.UP) ||
(page === PDFViewerApplication.pagesCount &&
pageSwitchDirection === PageSwitchDirection.DOWN)) {
return;
}
PDFViewerApplication.page = (page + pageSwitchDirection);
this.mouseScrollTimeStamp = currentTime;
}
clearTimeout(self.controlsTimeout);
self.container.classList.remove(SELECTOR);
delete self.controlsTimeout;
},
/**