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fix: do not require Content-Secruity-Policy style-src 'unsafe-inline' #256

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Merged
marcj merged 1 commit into from
May 9, 2019
Merged

fix: do not require Content-Secruity-Policy style-src 'unsafe-inline' #256

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68 changes: 53 additions & 15 deletions src/ResizeSensor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,18 @@
}
}

/**
* Apply CSS styles to element.
*
* @param {HTMLElement} element
* @param {Object} style
*/
function setStyle(element, style) {
Object.keys(style).forEach(function(key) {
element.style[key] = style[key];
});
}

/**
* Class for dimension change detection.
*
Expand Down Expand Up @@ -131,18 +143,47 @@
element.resizeSensor = document.createElement('div');
element.resizeSensor.dir = 'ltr';
element.resizeSensor.className = 'resize-sensor';
var style = 'pointer-events: none; position: absolute; left: 0px; top: 0px; right: 0; bottom: 0; ' +
'overflow: hidden; z-index: -1; visibility: hidden; max-width: 100%;';
var styleChild = 'position: absolute; left: 0; top: 0; transition: 0s;';

element.resizeSensor.style.cssText = style;
element.resizeSensor.innerHTML =
'<div class="resize-sensor-expand" style="' + style + '">' +
'<div style="' + styleChild + '"></div>' +
'</div>' +
'<div class="resize-sensor-shrink" style="' + style + '">' +
'<div style="' + styleChild + ' width: 200%; height: 200%"></div>' +
'</div>';

var style = {
pointerEvents: 'none',
position: 'absolute',
left: '0px',
top: '0px',
right: '0px',
bottom: '0px',
overflow: 'hidden',
zIndex: '-1',
visibility: 'hidden',
maxWidth: '100%'
};
var styleChild = {
position: 'absolute',
left: '0px',
top: '0px',
transition: '0s',
};

setStyle(element.resizeSensor, style);

var expand = document.createElement('div');
expand.className = 'resize-sensor-expand';
setStyle(expand, style);

var expandChild = document.createElement('div');
setStyle(expandChild, styleChild);
expand.appendChild(expandChild);

var shrink = document.createElement('div');
shrink.className = 'resize-sensor-shrink';
setStyle(shrink, style);

var shrinkChild = document.createElement('div');
setStyle(shrinkChild, styleChild);
setStyle(shrinkChild, { width: '200%', height: '200%' });
shrink.appendChild(shrinkChild);

element.resizeSensor.appendChild(expand);
element.resizeSensor.appendChild(shrink);
element.appendChild(element.resizeSensor);

var computedStyle = window.getComputedStyle(element);
Expand All @@ -151,9 +192,6 @@
element.style.position = 'relative';
}

var expand = element.resizeSensor.childNodes[0];
var expandChild = expand.childNodes[0];
var shrink = element.resizeSensor.childNodes[1];
var dirty, rafId;
var size = getElementSize(element);
var lastWidth = size.width;
Expand Down