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feedback.js
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feedback.js
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// feedback.js
// 2013, Kázmér Rapavi, https://github.com/ivoviz/feedback
// Licensed under the MIT license.
// Version 2.0
let html2canvas = require('html2canvas/dist/html2canvas');
let utility = require('./utility');
var format = require("string-template");
let EventHandler = utility .EventHandler;
var defaultI18nProperties = require('../i18n/en.properties');
(function ($) {
var templates = {
highlighter: require('../templates/highlighter.html'),
overview: require('../templates/overview.html'),
submitSuccess: require('../templates/submitSuccess.html'),
submitError: require('../templates/submitError.html')
};
var parseI18nProperties = function(i18nProperties) {
return i18nProperties
.split(/\r?\n/)
.filter(line => line && !line.startsWith("#"))
.map(line => line.split("="))
.map(fields => [fields[0], fields.slice(1).join("=")])
.reduce((acc, [key, value]) => { acc[key] = value; return acc; }, {});
};
var renderTemplate = function(template, namespace) {
return format(template, namespace);
}
var showSpinner = function() {
$("body").prepend($("<div />", {class: "feedback-spinner"}));
};
var hideSpinner = function() {
$(".feedback-spinner").remove();
};
$.feedback = function (options) {
var i18n = parseI18nProperties(options.i18nProperties || defaultI18nProperties);
var settings = $.extend({
ajaxURL: '',
postBrowserInfo: true,
postHTML: true,
postURL: true,
proxy: undefined,
letterRendering: false,
descriptionTemplate: '',
initButtonText: i18n.send_feedback,
strokeStyle: 'black',
shadowColor: 'black',
shadowOffsetX: 1,
shadowOffsetY: 1,
shadowBlur: 10,
lineJoin: 'bevel',
lineWidth: 3,
feedbackButton: '.feedback-btn',
isDraggable: true,
onScreenshotTaken: function () {
},
tpl: {
highlighter: renderTemplate(templates.highlighter, i18n),
overview: renderTemplate(templates.overview, i18n),
submitSuccess: renderTemplate(templates.submitSuccess, i18n),
submitError: renderTemplate(templates.submitError, i18n)
},
onClose: function () {
},
screenshotStroke: true,
highlightElement: true,
}, options);
var supportedBrowser = !!window.HTMLCanvasElement;
var isFeedbackButtonNative = settings.feedbackButton == '.feedback-btn';
var _html2canvas = false;
// Old code have undeclared global, ugly as hell.
let moduleStyle, canvasAttr, _top, _left, _bottom, _right, rect, drag, highlight, post, dtype, ignore, _canvas, _ctx, canDraw;
if (supportedBrowser) {
if (isFeedbackButtonNative) {
$('body').append('<button class="feedback-btn feedback-btn-gray">' + settings.initButtonText + '</button>');
}
$(document).on('click', settings.feedbackButton, function () {
// FIXME: Feedback tool does not properly work when a modal with tabIndex is set
// Work-around: Remove tabIndex attribute for all items
$("div[tabindex='-1']").removeAttr("tabindex");
if (isFeedbackButtonNative) {
$(this).hide();
}
var canDraw = false,
img = '',
h = $(document).height(),
w = $(document).width(),
tpl = '<div id="feedback-module">';
tpl += settings.tpl.highlighter + settings.tpl.overview + '<canvas id="feedback-canvas"></canvas><div id="feedback-helpers"></div><input id="feedback-note" name="feedback-note" type="hidden"></div>';
$('body').append(tpl);
let feedback_highlighter_event_handler = new EventHandler($('#feedback-highlighter').get(0));
let feedback_highlighter_parent_event_handler = new EventHandler($('#feedback-highlighter').get(0).parentNode);
moduleStyle = {
'position': 'absolute',
'left': '0px',
'top': '0px'
};
canvasAttr = {
'width': w,
'height': h
};
$('#feedback-module').css(moduleStyle);
$('#feedback-canvas').attr(canvasAttr).css('z-index', '30000');
$('#feedback-highlighter-back').remove();
canDraw = true;
$('#feedback-canvas').css('cursor', 'crosshair');
$('#feedback-helpers').show();
$('#feedback-welcome').hide();
$('#feedback-highlighter').show();
if (settings.isDraggable) {
let feedback_highlighter_move_handler = null;
feedback_highlighter_event_handler.on_pointer_events(e => {
let point = e.touches ? e.touches[0] : e;
var $d = $("#feedback-highlighter").addClass('feedback-draggable'),
drag_h = $d.outerHeight(),
drag_w = $d.outerWidth(),
pos_y = $d.offset().top + drag_h - point.pageY,
pos_x = $d.offset().left + drag_w - point.pageX;
$d.css('z-index', 40000);
feedback_highlighter_move_handler = function (e) {
let point = e.touches ? e.touches[0] : e;
_top = point.pageY + pos_y - drag_h;
_left = point.pageX + pos_x - drag_w;
_bottom = drag_h - point.pageY;
_right = drag_w - point.pageX;
if (_left < 0) _left = 0;
if (_top < 0) _top = 0;
if (_right > $(window).width())
_left = $(window).width() - drag_w;
if (_left > $(window).width() - drag_w)
_left = $(window).width() - drag_w;
if (_bottom > $(document).height())
_top = $(document).height() - drag_h;
if (_top > $(document).height() - drag_h)
_top = $(document).height() - drag_h;
$('.feedback-draggable').offset({
top: _top,
left: _left
}).on("mouseup", function () {
$(this).removeClass('feedback-draggable');
});
};
feedback_highlighter_parent_event_handler.on_pointer_events(feedback_highlighter_move_handler, 'move');
e.preventDefault();
}, 'down').on_pointer_events(e => {
$("#feedback-highlighter").removeClass('feedback-draggable');
feedback_highlighter_parent_event_handler.off_pointer_events(feedback_highlighter_move_handler, 'move');
}, 'up');
}
var ctx = $('#feedback-canvas')[0].getContext('2d');
ctx.fillStyle = 'rgba(102,102,102,0.5)';
ctx.fillRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
rect = {};
drag = false;
highlight = 1,
post = {};
if (settings.postBrowserInfo) {
post.browser = {};
post.browser.appCodeName = navigator.appCodeName;
post.browser.appName = navigator.appName;
post.browser.appVersion = navigator.appVersion;
post.browser.cookieEnabled = navigator.cookieEnabled;
post.browser.onLine = navigator.onLine;
post.browser.platform = navigator.platform;
post.browser.userAgent = navigator.userAgent;
post.browser.plugins = [];
$.each(navigator.plugins, function (i) {
post.browser.plugins.push(navigator.plugins[i].name);
});
$('#feedback-browser-info').show();
}
if (settings.postURL) {
post.url = document.URL;
$('#feedback-page-info').show();
}
if (settings.postHTML) {
post.html = $('html').html();
$('#feedback-page-structure').show();
}
if (!settings.postBrowserInfo && !settings.postURL && !settings.postHTML)
$('#feedback-additional-none').show();
$(document).on('mousedown', '#feedback-canvas', function (e) {
if (canDraw) {
rect.startX = e.pageX - $(this).offset().left;
rect.startY = e.pageY - $(this).offset().top;
rect.w = 0;
rect.h = 0;
drag = true;
}
});
$(document).on('mouseup', function () {
if (canDraw) {
drag = false;
var dtop = rect.startY,
dleft = rect.startX,
dwidth = rect.w,
dheight = rect.h;
dtype = 'highlight';
if (dwidth == 0 || dheight == 0) return;
if (dwidth < 0) {
dleft += dwidth;
dwidth *= -1;
}
if (dheight < 0) {
dtop += dheight;
dheight *= -1;
}
if (dtop + dheight > $(document).height())
dheight = $(document).height() - dtop;
if (dleft + dwidth > $(document).width())
dwidth = $(document).width() - dleft;
if (highlight == 0)
dtype = 'blackout';
$('#feedback-helpers').append('<div class="feedback-helper" data-type="' + dtype + '" data-time="' + Date.now() + '" style="position:absolute;top:' + dtop + 'px;left:' + dleft + 'px;width:' + dwidth + 'px;height:' + dheight + 'px;z-index:30000;"></div>');
redraw(ctx);
rect.w = 0;
}
});
$(document).on('mousemove', function (e) {
if (canDraw && drag) {
$('#feedback-highlighter').css('cursor', 'default');
rect.w = (e.pageX - $('#feedback-canvas').offset().left) - rect.startX;
rect.h = (e.pageY - $('#feedback-canvas').offset().top) - rect.startY;
ctx.clearRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
ctx.fillStyle = 'rgba(102,102,102,0.5)';
ctx.fillRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
drawlines(ctx, parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
if (highlight == 1) {
drawlines(ctx, rect.startX, rect.startY, rect.w, rect.h);
ctx.clearRect(rect.startX, rect.startY, rect.w, rect.h);
}
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
ctx.clearRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'blackout') {
ctx.fillStyle = 'rgba(0,0,0,1)';
ctx.fillRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height())
}
});
if (highlight == 0) {
ctx.fillStyle = 'rgba(0,0,0,0.5)';
ctx.fillRect(rect.startX, rect.startY, rect.w, rect.h);
}
}
});
if (settings.highlightElement) {
var highlighted = [],
tmpHighlighted = [],
hidx = 0;
$(document).on('mousemove click', '#feedback-canvas', function (e) {
if (canDraw) {
redraw(ctx);
tmpHighlighted = [];
$('#feedback-canvas').css('cursor', 'crosshair');
$('* :not(body,script,iframe,div,section,.feedback-btn,#feedback-module *)').each(function () {
if ($(this).attr('data-highlighted') === 'true')
return;
if (e.pageX > $(this).offset().left && e.pageX < $(this).offset().left + $(this).width() && e.pageY > $(this).offset().top + parseInt($(this).css('padding-top'), 10) && e.pageY < $(this).offset().top + $(this).height() + parseInt($(this).css('padding-top'), 10)) {
tmpHighlighted.push($(this));
}
});
var $toHighlight = tmpHighlighted[tmpHighlighted.length - 1];
if ($toHighlight && !drag) {
$('#feedback-canvas').css('cursor', 'pointer');
var _x = $toHighlight.offset().left - 2,
_y = $toHighlight.offset().top - 2,
_w = $toHighlight.width() + parseInt($toHighlight.css('padding-left'), 10) + parseInt($toHighlight.css('padding-right'), 10) + 6,
_h = $toHighlight.height() + parseInt($toHighlight.css('padding-top'), 10) + parseInt($toHighlight.css('padding-bottom'), 10) + 6;
if (highlight == 1) {
drawlines(ctx, _x, _y, _w, _h);
ctx.clearRect(_x, _y, _w, _h);
dtype = 'highlight';
}
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
ctx.clearRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
if (highlight == 0) {
dtype = 'blackout';
ctx.fillStyle = 'rgba(0,0,0,0.5)';
ctx.fillRect(_x, _y, _w, _h);
}
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'blackout') {
ctx.fillStyle = 'rgba(0,0,0,1)';
ctx.fillRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
}
});
if (e.type == 'click' && Math.round(e.pageX) == Math.round(rect.startX) && Math.round(e.pageY) == Math.round(rect.startY)) {
$('#feedback-helpers').append('<div class="feedback-helper" data-highlight-id="' + hidx + '" data-type="' + dtype + '" data-time="' + Date.now() + '" style="position:absolute;top:' + _y + 'px;left:' + _x + 'px;width:' + _w + 'px;height:' + _h + 'px;z-index:30000;"></div>');
highlighted.push(hidx);
++hidx;
redraw(ctx);
}
}
}
});
}
$(document).on('mouseleave', 'body,#feedback-canvas', function () {
redraw(ctx);
});
$(document).on('mouseenter', '.feedback-helper', function () {
redraw(ctx);
});
$(document).on('click', '#feedback-welcome-next', function () {
if ($('#feedback-note').val().length > 0) {
canDraw = true;
$('#feedback-canvas').css('cursor', 'crosshair');
$('#feedback-helpers').show();
$('#feedback-welcome').hide();
$('#feedback-highlighter').show();
}
else {
$('#feedback-welcome-error').show();
}
});
$(document).on('mouseenter mouseleave', '.feedback-helper', function (e) {
if (drag)
return;
rect.w = 0;
rect.h = 0;
if (e.type === 'mouseenter') {
$(this).css('z-index', '30001');
$(this).append('<div class="feedback-helper-inner" style="width:' + ($(this).width() - 2) + 'px;height:' + ($(this).height() - 2) + 'px;position:absolute;margin:1px;"></div>');
$(this).append('<div id="feedback-close"></div>');
$(this).find('#feedback-close').css({
'top': -1 * ($(this).find('#feedback-close').height() / 2) + 'px',
'left': $(this).width() - ($(this).find('#feedback-close').width() / 2) + 'px'
});
if ($(this).attr('data-type') == 'blackout') {
/* redraw white */
ctx.clearRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
ctx.fillStyle = 'rgba(102,102,102,0.5)';
ctx.fillRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
drawlines(ctx, parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
ctx.clearRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
ctx.clearRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height())
ctx.fillStyle = 'rgba(0,0,0,0.75)';
ctx.fillRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
ignore = $(this).attr('data-time');
/* redraw black */
$('.feedback-helper').each(function () {
if ($(this).attr('data-time') == ignore)
return true;
if ($(this).attr('data-type') == 'blackout') {
ctx.fillStyle = 'rgba(0,0,0,1)';
ctx.fillRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height())
}
});
}
}
else {
$(this).css('z-index', '30000');
$(this).children().remove();
if ($(this).attr('data-type') == 'blackout') {
redraw(ctx);
}
}
});
$(document).on('click', '#feedback-close', function () {
if (settings.highlightElement && $(this).parent().attr('data-highlight-id'))
var _hidx = $(this).parent().attr('data-highlight-id');
$(this).parent().remove();
if (settings.highlightElement && _hidx)
$('[data-highlight-id="' + _hidx + '"]').removeAttr('data-highlighted').removeAttr('data-highlight-id');
redraw(ctx);
});
$('#feedback-module').on('click', '.feedback-wizard-close,.feedback-close-btn', function () {
close();
});
$(document).on('keyup', function (e) {
if (e.keyCode == 27)
close();
});
$(document).on('selectstart dragstart', document, function (e) {
e.preventDefault();
});
$(document).on('click', '#feedback-highlighter-back', function () {
canDraw = false;
$('#feedback-canvas').css('cursor', 'default');
$('#feedback-helpers').hide();
$('#feedback-highlighter').hide();
$('#feedback-welcome-error').hide();
$('#feedback-welcome').show();
});
$(document).on('click', '.feedback-sethighlight', function () {
highlight = 1;
$(this).addClass('feedback-active');
$('.feedback-setblackout').removeClass('feedback-active');
});
$(document).on('click', '.feedback-setblackout', function () {
highlight = 0;
$(this).addClass('feedback-active');
$('.feedback-sethighlight').removeClass('feedback-active');
});
$(document).on('click', '#feedback-highlighter-next', function () {
canDraw = false;
$('#feedback-canvas').css('cursor', 'default');
var sy = $(document).scrollTop(),
dh = $(window).height();
$('#feedback-helpers').hide();
$('#feedback-highlighter').hide();
showSpinner();
if (!settings.screenshotStroke) {
redraw(ctx, false);
}
$("#feedback-note").val(settings.descriptionTemplate);
const el = $("body").get(0);
const options = { scale: 1 };
html2canvas(el, options).then(
function (canvas) {
hideSpinner();
if (!settings.screenshotStroke) {
redraw(ctx);
}
_canvas = $('<canvas id="feedback-canvas-tmp" width="' + w + '" height="' + dh + '"/>').hide().appendTo('body');
_ctx = _canvas.get(0).getContext('2d');
_ctx.drawImage(canvas, 0, sy, w, dh, 0, 0, w, dh);
img = _canvas.get(0).toDataURL();
$(document).scrollTop(sy);
post.img = img;
settings.onScreenshotTaken(post.img);
$('#feedback-canvas-tmp').remove();
$('#feedback-overview').show();
if (!utility.isMobile) {
$('#feedback-overview').toggleClass('feedback-desktop', true);
$('#feedback-overview').toggleClass('feedback-mobile', false);
} else {
$('#feedback-overview').toggleClass('feedback-desktop', false);
$('#feedback-overview').toggleClass('feedback-mobile', true);
}
$('#feedback-overview-screenshot>img').remove();
$('#feedback-overview-screenshot').append('<img class="feedback-screenshot" src="' + img + '" />');
}
);
});
$(document).on('click', '#feedback-overview-back', function (e) {
canDraw = true;
$('#feedback-canvas').css('cursor', 'crosshair');
$('#feedback-overview').hide();
$('#feedback-helpers').show();
$('#feedback-highlighter').show();
$('#feedback-overview-error').hide();
});
$(document).on('click', '#feedback-submit', function () {
canDraw = false;
if ($('#feedback-title').val().length > 0 && $('#feedback-note').val().length > 0) {
$('#feedback-submit-success,#feedback-submit-error').remove();
$('#feedback-overview').hide();
post.img = img;
post.title = $('#feedback-title').val();
post.note = $('#feedback-note').val();
var data = {feedback: JSON.stringify(post)};
showSpinner();
(settings.postFunction || $.ajax)({
url: settings.ajaxURL,
dataType: 'json',
type: 'POST',
data: data,
post: post,
success: function () {
hideSpinner();
$('#feedback-module').append(settings.tpl.submitSuccess);
},
error: function () {
hideSpinner();
$('#feedback-module').append(settings.tpl.submitError);
}
});
}
else {
$('#feedback-overview-error').show();
}
});
});
}
function close() {
canDraw = false;
$(document).off('mouseenter mouseleave', '.feedback-helper');
$(document).off('mouseup keyup');
$(document).off('mousedown', '.feedback-setblackout');
$(document).off('mousedown', '.feedback-sethighlight');
$(document).off('mousedown click', '#feedback-close');
$(document).off('mousedown', '#feedback-canvas');
$(document).off('click', '#feedback-highlighter-next');
$(document).off('click', '#feedback-highlighter-back');
$(document).off('click', '#feedback-welcome-next');
$(document).off('click', '#feedback-overview-back');
$(document).off('mouseleave', 'body');
$(document).off('mouseenter', '.feedback-helper');
$(document).off('selectstart dragstart', document);
$('#feedback-module').off('click', '.feedback-wizard-close,.feedback-close-btn');
$(document).off('click', '#feedback-submit');
if (settings.highlightElement) {
$(document).off('click', '#feedback-canvas');
$(document).off('mousemove', '#feedback-canvas');
}
$('[data-highlighted="true"]').removeAttr('data-highlight-id').removeAttr('data-highlighted');
$('#feedback-module').remove();
$('.feedback-btn').show();
settings.onClose.call(this);
}
function redraw(ctx, border) {
border = typeof border !== 'undefined' ? border : true;
ctx.clearRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
ctx.fillStyle = 'rgba(102,102,102,0.5)';
ctx.fillRect(0, 0, $('#feedback-canvas').width(), $('#feedback-canvas').height());
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
if (border)
drawlines(ctx, parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'highlight')
ctx.clearRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
});
$('.feedback-helper').each(function () {
if ($(this).attr('data-type') == 'blackout') {
ctx.fillStyle = 'rgba(0,0,0,1)';
ctx.fillRect(parseInt($(this).css('left'), 10), parseInt($(this).css('top'), 10), $(this).width(), $(this).height());
}
});
}
function drawlines(ctx, x, y, w, h) {
ctx.strokeStyle = settings.strokeStyle;
ctx.shadowColor = settings.shadowColor;
ctx.shadowOffsetX = settings.shadowOffsetX;
ctx.shadowOffsetY = settings.shadowOffsetY;
ctx.shadowBlur = settings.shadowBlur;
ctx.lineJoin = settings.lineJoin;
ctx.lineWidth = settings.lineWidth;
ctx.strokeRect(x, y, w, h);
ctx.shadowOffsetX = 0;
ctx.shadowOffsetY = 0;
ctx.shadowBlur = 0;
ctx.lineWidth = 1;
}
};
}(jQuery));