/**
* Movable.js
*
* Released under LGPL License.
* Copyright (c) 1999-2015 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* Movable mixin. Makes controls movable absolute and relative to other elements.
*
* @mixin tinymce.ui.Movable
*/
define("tinymce/ui/Movable", [
"tinymce/ui/DomUtils"
], function(DomUtils) {
"use strict";
function calculateRelativePosition(ctrl, targetElm, rel) {
var ctrlElm, pos, x, y, selfW, selfH, targetW, targetH, viewport, size;
viewport = DomUtils.getViewPort();
// Get pos of target
pos = DomUtils.getPos(targetElm);
x = pos.x;
y = pos.y;
if (ctrl.state.get('fixed') && DomUtils.getRuntimeStyle(document.body, 'position') == 'static') {
x -= viewport.x;
y -= viewport.y;
}
// Get size of self
ctrlElm = ctrl.getEl();
size = DomUtils.getSize(ctrlElm);
selfW = size.width;
selfH = size.height;
// Get size of target
size = DomUtils.getSize(targetElm);
targetW = size.width;
targetH = size.height;
// Parse align string
rel = (rel || '').split('');
// Target corners
if (rel[0] === 'b') {
y += targetH;
}
if (rel[1] === 'r') {
x += targetW;
}
if (rel[0] === 'c') {
y += Math.round(targetH / 2);
}
if (rel[1] === 'c') {
x += Math.round(targetW / 2);
}
// Self corners
if (rel[3] === 'b') {
y -= selfH;
}
if (rel[4] === 'r') {
x -= selfW;
}
if (rel[3] === 'c') {
y -= Math.round(selfH / 2);
}
if (rel[4] === 'c') {
x -= Math.round(selfW / 2);
}
return {
x: x,
y: y,
w: selfW,
h: selfH
};
}
return {
/**
* Tests various positions to get the most suitable one.
*
* @method testMoveRel
* @param {DOMElement} elm Element to position against.
* @param {Array} rels Array with relative positions.
* @return {String} Best suitable relative position.
*/
testMoveRel: function(elm, rels) {
var viewPortRect = DomUtils.getViewPort();
for (var i = 0; i < rels.length; i++) {
var pos = calculateRelativePosition(this, elm, rels[i]);
if (this.state.get('fixed')) {
if (pos.x > 0 && pos.x + pos.w < viewPortRect.w && pos.y > 0 && pos.y + pos.h < viewPortRect.h) {
return rels[i];
}
} else {
if (pos.x > viewPortRect.x && pos.x + pos.w < viewPortRect.w + viewPortRect.x &&
pos.y > viewPortRect.y && pos.y + pos.h < viewPortRect.h + viewPortRect.y) {
return rels[i];
}
}
}
return rels[0];
},
/**
* Move relative to the specified element.
*
* @method moveRel
* @param {Element} elm Element to move relative to.
* @param {String} rel Relative mode. For example: br-tl.
* @return {tinymce.ui.Control} Current control instance.
*/
moveRel: function(elm, rel) {
if (typeof rel != 'string') {
rel = this.testMoveRel(elm, rel);
}
var pos = calculateRelativePosition(this, elm, rel);
return this.moveTo(pos.x, pos.y);
},
/**
* Move by a relative x, y values.
*
* @method moveBy
* @param {Number} dx Relative x position.
* @param {Number} dy Relative y position.
* @return {tinymce.ui.Control} Current control instance.
*/
moveBy: function(dx, dy) {
var self = this, rect = self.layoutRect();
self.moveTo(rect.x + dx, rect.y + dy);
return self;
},
/**
* Move to absolute position.
*
* @method moveTo
* @param {Number} x Absolute x position.
* @param {Number} y Absolute y position.
* @return {tinymce.ui.Control} Current control instance.
*/
moveTo: function(x, y) {
var self = this;
// TODO: Move this to some global class
function constrain(value, max, size) {
if (value < 0) {
return 0;
}
if (value + size > max) {
value = max - size;
return value < 0 ? 0 : value;
}
return value;
}
if (self.settings.constrainToViewport) {
var viewPortRect = DomUtils.getViewPort(window);
var layoutRect = self.layoutRect();
x = constrain(x, viewPortRect.w + viewPortRect.x, layoutRect.w);
y = constrain(y, viewPortRect.h + viewPortRect.y, layoutRect.h);
}
if (self.state.get('rendered')) {
self.layoutRect({x: x, y: y}).repaint();
} else {
self.settings.x = x;
self.settings.y = y;
}
self.fire('move', {x: x, y: y});
return self;
}
};
});
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