@dotglitch/ngx-ctx-menu
Version:
Angular context menu that works with templates
116 lines • 15.6 kB
JavaScript
export const getPosition = (el, config = {}, bounds) => {
// Bounds of the popup owner
const src = !!el['nodeName']
? el.getBoundingClientRect()
: {
// It's a pointer event, so we'll take the X and Y from the pointer.
x: el['clientX'],
y: el['clientY'],
// Set a default tiny size, so we don't divide by zero.
width: 0.0001,
height: 0.0001
};
// Popup bounds
const { width, height } = bounds;
const winh = window.innerHeight;
const winw = window.innerWidth;
const cords = {
top: null,
left: null
};
if (config?.position == "left" || config?.position == "right" || !config?.position) {
switch (config?.alignment) {
case "end": {
// vertically bind to bottom
cords.top = src.y + src.height - height;
break;
}
case "afterend": {
// vertically bind below bottom
cords.top = src.y + src.height;
break;
}
case "beforestart": {
// vertically bind above top
cords.top = src.y - height;
break;
}
case "start": {
// vertically bind to top
cords.top = src.y;
break;
}
case "center":
default: {
// vertically center
cords.top = (src.y + (src.height / 2)) - (height / 2);
break;
}
}
// Apply bounds to prevent the dialog from being cut-off screen
// Lower bound
cords.top = Math.max(config?.edgePadding || 0, cords.top);
// Upper bound
cords.top = Math.min(winh - height, cords.top);
if (config?.position == "left") {
cords.left = src.x - (width + (config?.arrowSize || 0) + (config?.arrowPadding || 0));
}
if (config?.position == "right" || !config?.position) {
cords.left = src.x + (src.width + (config?.arrowSize || 0) + (config?.arrowPadding || 0));
}
// Lower bound
cords.left = Math.max(config?.edgePadding || 0, cords.left);
// Upper bound
cords.left = Math.min(winw - width, cords.left);
}
else if (config?.position == "top" || config?.position == "bottom") {
switch (config?.alignment) {
case "end": {
// vertically bind to right
cords.left = src.x + src.width - width;
break;
}
case "afterend": {
// vertically bind past right
cords.left = src.x + src.width;
break;
}
case "beforestart": {
// vertically bind before left
cords.left = src.x - width;
break;
}
case "start": {
// vertically bind to left
cords.left = src.x;
break;
}
case "center":
default: {
// vertically center
cords.left = (src.x + (src.width / 2)) - (width / 2);
break;
}
}
// Apply bounds to prevent the dialog from being cut-off screen
// Lower bound
cords.left = Math.max(config?.edgePadding || 0, cords.left);
// Upper bound
cords.left = Math.min(winw - width, cords.left);
if (config?.position == "top") {
cords.top = src.y - (height + (config?.arrowSize || 0) + (config?.arrowPadding || 0));
}
if (config?.position == "bottom") {
cords.top = src.y + (src.height + (config?.arrowSize || 0) + (config?.arrowPadding || 0));
}
// Lower bound
cords.top = Math.max(config?.edgePadding || 0, cords.top);
// Upper bound
cords.top = Math.min(winh - height, cords.top);
}
// Assign unit
cords.top = cords.top + 'px';
cords.left = cords.left + 'px';
return cords;
};
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(el as HTMLElement).getBoundingClientRect()\n                : {\n                    // It's a pointer event, so we'll take the X and Y from the pointer.\n                    x: el['clientX'],\n                    y: el['clientY'],\n                    // Set a default tiny size, so we don't divide by zero.\n                    width: 0.0001,\n                    height: 0.0001\n                } as DOMRect;\n\n    // Popup bounds\n    const { width, height } = bounds;\n\n    const winh = window.innerHeight;\n    const winw = window.innerWidth;\n\n    const cords = {\n        top: null,\n        left: null\n    };\n\n    if (config?.position == \"left\" || config?.position == \"right\" || !config?.position) {\n        switch (config?.alignment) {\n\n            case \"end\": {\n                // vertically bind to bottom\n                cords.top = src.y + src.height - height;\n                break;\n            }\n            case \"afterend\": {\n                // vertically bind below bottom\n                cords.top = src.y + src.height;\n                break;\n            }\n            case \"beforestart\": {\n                // vertically bind above top\n                cords.top = src.y - height;\n                break;\n            }\n            case \"start\": {\n                // vertically bind to top\n                cords.top = src.y;\n                break;\n            }\n            case \"center\":\n            default: {\n                // vertically center\n                cords.top = (src.y + (src.height / 2)) - (height / 2);\n                break;\n            }\n        }\n\n        // Apply bounds to prevent the dialog from being cut-off screen\n        // Lower bound\n        cords.top = Math.max(config?.edgePadding || 0, cords.top);\n        // Upper bound\n        cords.top = Math.min(winh - height, cords.top);\n\n        if (config?.position == \"left\") {\n            cords.left = src.x - (width + (config?.arrowSize || 0) + (config?.arrowPadding || 0));\n        }\n        if (config?.position == \"right\" || !config?.position) {\n            cords.left = src.x + (src.width + (config?.arrowSize || 0) + (config?.arrowPadding || 0));\n        }\n\n        // Lower bound\n        cords.left = Math.max(config?.edgePadding || 0, cords.left);\n        // Upper bound\n        cords.left = Math.min(winw - width, cords.left);\n    }\n    else if (config?.position == \"top\" || config?.position == \"bottom\") {\n        switch (config?.alignment) {\n            case \"end\": {\n                // vertically bind to right\n                cords.left = src.x + src.width - width;\n                break;\n            }\n            case \"afterend\": {\n                // vertically bind past right\n                cords.left = src.x + src.width;\n                break;\n            }\n            case \"beforestart\": {\n                // vertically bind before left\n                cords.left = src.x - width;\n                break;\n            }\n            case \"start\": {\n                // vertically bind to left\n                cords.left = src.x;\n                break;\n            }\n            case \"center\":\n            default: {\n                // vertically center\n                cords.left = (src.x + (src.width / 2)) - (width / 2);\n                break;\n            }\n        }\n\n        // Apply bounds to prevent the dialog from being cut-off screen\n        // Lower bound\n        cords.left = Math.max(config?.edgePadding || 0, cords.left);\n        // Upper bound\n        cords.left = Math.min(winw - width, cords.left);\n\n\n        if (config?.position == \"top\") {\n            cords.top = src.y - (height + (config?.arrowSize || 0) + (config?.arrowPadding || 0));\n        }\n        if (config?.position == \"bottom\") {\n            cords.top = src.y + (src.height + (config?.arrowSize || 0) + (config?.arrowPadding || 0));\n        }\n\n        // Lower bound\n        cords.top = Math.max(config?.edgePadding || 0, cords.top);\n        // Upper bound\n        cords.top = Math.min(winh - height, cords.top);\n    }\n\n    // Assign unit\n    cords.top = cords.top + 'px';\n    cords.left = cords.left + 'px';\n\n    return cords;\n}\n"]}