forked from dojo/dijit
-
Notifications
You must be signed in to change notification settings - Fork 0
/
place.js
407 lines (372 loc) · 15.7 KB
/
place.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
define([
"dojo/_base/array", // array.forEach array.map array.some
"dojo/dom-geometry", // domGeometry.position
"dojo/dom-style", // domStyle.getComputedStyle
"dojo/_base/kernel", // kernel.deprecated
"dojo/_base/window", // win.body
"./Viewport", // getEffectiveBox
"./main" // dijit (defining dijit.place to match API doc)
], function(array, domGeometry, domStyle, kernel, win, Viewport, dijit){
// module:
// dijit/place
function _place(/*DomNode*/ node, choices, layoutNode, aroundNodeCoords){
// summary:
// Given a list of spots to put node, put it at the first spot where it fits,
// of if it doesn't fit anywhere then the place with the least overflow
// choices: Array
// Array of elements like: {corner: 'TL', pos: {x: 10, y: 20} }
// Above example says to put the top-left corner of the node at (10,20)
// layoutNode: Function(node, aroundNodeCorner, nodeCorner, size)
// for things like tooltip, they are displayed differently (and have different dimensions)
// based on their orientation relative to the parent. This adjusts the popup based on orientation.
// It also passes in the available size for the popup, which is useful for tooltips to
// tell them that their width is limited to a certain amount. layoutNode() may return a value expressing
// how much the popup had to be modified to fit into the available space. This is used to determine
// what the best placement is.
// aroundNodeCoords: Object
// Size of aroundNode, ex: {w: 200, h: 50}
// get {x: 10, y: 10, w: 100, h:100} type obj representing position of
// viewport over document
var view = Viewport.getEffectiveBox(node.ownerDocument);
// This won't work if the node is inside a <div style="position: relative">,
// so reattach it to <body>. (Otherwise, the positioning will be wrong
// and also it might get cutoff.)
if(!node.parentNode || String(node.parentNode.tagName).toLowerCase() != "body"){
win.body(node.ownerDocument).appendChild(node);
}
var best = null;
array.some(choices, function(choice){
var corner = choice.corner;
var pos = choice.pos;
var overflow = 0;
// calculate amount of space available given specified position of node
var spaceAvailable = {
w: {
'L': view.l + view.w - pos.x,
'R': pos.x - view.l,
'M': view.w
}[corner.charAt(1)],
h: {
'T': view.t + view.h - pos.y,
'B': pos.y - view.t,
'M': view.h
}[corner.charAt(0)]
};
// Clear left/right position settings set earlier so they don't interfere with calculations,
// specifically when layoutNode() (a.k.a. Tooltip.orient()) measures natural width of Tooltip
var s = node.style;
s.left = s.right = "auto";
// configure node to be displayed in given position relative to button
// (need to do this in order to get an accurate size for the node, because
// a tooltip's size changes based on position, due to triangle)
if(layoutNode){
var res = layoutNode(node, choice.aroundCorner, corner, spaceAvailable, aroundNodeCoords);
overflow = typeof res == "undefined" ? 0 : res;
}
// get node's size
var style = node.style;
var oldDisplay = style.display;
var oldVis = style.visibility;
if(style.display == "none"){
style.visibility = "hidden";
style.display = "";
}
var bb = domGeometry.position(node);
style.display = oldDisplay;
style.visibility = oldVis;
// coordinates and size of node with specified corner placed at pos,
// and clipped by viewport
var
startXpos = {
'L': pos.x,
'R': pos.x - bb.w,
'M': Math.max(view.l, Math.min(view.l + view.w, pos.x + (bb.w >> 1)) - bb.w) // M orientation is more flexible
}[corner.charAt(1)],
startYpos = {
'T': pos.y,
'B': pos.y - bb.h,
'M': Math.max(view.t, Math.min(view.t + view.h, pos.y + (bb.h >> 1)) - bb.h)
}[corner.charAt(0)],
startX = Math.max(view.l, startXpos),
startY = Math.max(view.t, startYpos),
endX = Math.min(view.l + view.w, startXpos + bb.w),
endY = Math.min(view.t + view.h, startYpos + bb.h),
width = endX - startX,
height = endY - startY;
overflow += (bb.w - width) + (bb.h - height);
if(best == null || overflow < best.overflow){
best = {
corner: corner,
aroundCorner: choice.aroundCorner,
x: startX,
y: startY,
w: width,
h: height,
overflow: overflow,
spaceAvailable: spaceAvailable
};
}
return !overflow;
});
// In case the best position is not the last one we checked, need to call
// layoutNode() again.
if(best.overflow && layoutNode){
layoutNode(node, best.aroundCorner, best.corner, best.spaceAvailable, aroundNodeCoords);
}
// And then position the node. Do this last, after the layoutNode() above
// has sized the node, due to browser quirks when the viewport is scrolled
// (specifically that a Tooltip will shrink to fit as though the window was
// scrolled to the left).
var top = best.y,
side = best.x,
body = win.body(node.ownerDocument);
if(/relative|absolute/.test(domStyle.get(body, "position"))){
// compensate for margin on <body>, see #16148
top -= domStyle.get(body, "marginTop");
side -= domStyle.get(body, "marginLeft");
}
var s = node.style;
s.top = top + "px";
s.left = side + "px";
s.right = "auto"; // needed for FF or else tooltip goes to far left
return best;
}
var reverse = {
// Map from corner to kitty-corner
"TL": "BR",
"TR": "BL",
"BL": "TR",
"BR": "TL"
};
var place = {
// summary:
// Code to place a DOMNode relative to another DOMNode.
// Load using require(["dijit/place"], function(place){ ... }).
at: function(node, pos, corners, padding, layoutNode){
// summary:
// Positions node kitty-corner to the rectangle centered at (pos.x, pos.y) with width and height of
// padding.x * 2 and padding.y * 2, or zero if padding not specified. Picks first corner in corners[]
// where node is fully visible, or the corner where it's most visible.
//
// Node is assumed to be absolutely or relatively positioned.
// node: DOMNode
// The node to position
// pos: dijit/place.__Position
// Object like {x: 10, y: 20}
// corners: String[]
// Array of Strings representing order to try corners of the node in, like ["TR", "BL"].
// Possible values are:
//
// - "BL" - bottom left
// - "BR" - bottom right
// - "TL" - top left
// - "TR" - top right
// padding: dijit/place.__Position?
// Optional param to set padding, to put some buffer around the element you want to position.
// Defaults to zero.
// layoutNode: Function(node, aroundNodeCorner, nodeCorner)
// For things like tooltip, they are displayed differently (and have different dimensions)
// based on their orientation relative to the parent. This adjusts the popup based on orientation.
// example:
// Try to place node's top right corner at (10,20).
// If that makes node go (partially) off screen, then try placing
// bottom left corner at (10,20).
// | place(node, {x: 10, y: 20}, ["TR", "BL"])
var choices = array.map(corners, function(corner){
var c = {
corner: corner,
aroundCorner: reverse[corner], // so TooltipDialog.orient() gets aroundCorner argument set
pos: {x: pos.x,y: pos.y}
};
if(padding){
c.pos.x += corner.charAt(1) == 'L' ? padding.x : -padding.x;
c.pos.y += corner.charAt(0) == 'T' ? padding.y : -padding.y;
}
return c;
});
return _place(node, choices, layoutNode);
},
around: function(
/*DomNode*/ node,
/*DomNode|dijit/place.__Rectangle*/ anchor,
/*String[]*/ positions,
/*Boolean*/ leftToRight,
/*Function?*/ layoutNode){
// summary:
// Position node adjacent or kitty-corner to anchor
// such that it's fully visible in viewport.
// description:
// Place node such that corner of node touches a corner of
// aroundNode, and that node is fully visible.
// anchor:
// Either a DOMNode or a rectangle (object with x, y, width, height).
// positions:
// Ordered list of positions to try matching up.
//
// - before: places drop down to the left of the anchor node/widget, or to the right in the case
// of RTL scripts like Hebrew and Arabic; aligns either the top of the drop down
// with the top of the anchor, or the bottom of the drop down with bottom of the anchor.
// - after: places drop down to the right of the anchor node/widget, or to the left in the case
// of RTL scripts like Hebrew and Arabic; aligns either the top of the drop down
// with the top of the anchor, or the bottom of the drop down with bottom of the anchor.
// - before-centered: centers drop down to the left of the anchor node/widget, or to the right
// in the case of RTL scripts like Hebrew and Arabic
// - after-centered: centers drop down to the right of the anchor node/widget, or to the left
// in the case of RTL scripts like Hebrew and Arabic
// - above-centered: drop down is centered above anchor node
// - above: drop down goes above anchor node, left sides aligned
// - above-alt: drop down goes above anchor node, right sides aligned
// - below-centered: drop down is centered above anchor node
// - below: drop down goes below anchor node
// - below-alt: drop down goes below anchor node, right sides aligned
// layoutNode: Function(node, aroundNodeCorner, nodeCorner)
// For things like tooltip, they are displayed differently (and have different dimensions)
// based on their orientation relative to the parent. This adjusts the popup based on orientation.
// leftToRight:
// True if widget is LTR, false if widget is RTL. Affects the behavior of "above" and "below"
// positions slightly.
// example:
// | placeAroundNode(node, aroundNode, ['below', 'above-alt']);
// This will try to position node such that node's top-left corner is at the same position
// as the bottom left corner of the aroundNode (ie, put node below
// aroundNode, with left edges aligned). If that fails it will try to put
// the bottom-right corner of node where the top right corner of aroundNode is
// (ie, put node above aroundNode, with right edges aligned)
//
// If around is a DOMNode (or DOMNode id), convert to coordinates.
var aroundNodePos;
if(typeof anchor == "string" || "offsetWidth" in anchor || "ownerSVGElement" in anchor){
aroundNodePos = domGeometry.position(anchor, true);
// For above and below dropdowns, subtract width of border so that popup and aroundNode borders
// overlap, preventing a double-border effect. Unfortunately, difficult to measure the border
// width of either anchor or popup because in both cases the border may be on an inner node.
if(/^(above|below)/.test(positions[0])){
var anchorBorder = domGeometry.getBorderExtents(anchor),
anchorChildBorder = anchor.firstChild ? domGeometry.getBorderExtents(anchor.firstChild) : {t:0,l:0,b:0,r:0},
nodeBorder = domGeometry.getBorderExtents(node),
nodeChildBorder = node.firstChild ? domGeometry.getBorderExtents(node.firstChild) : {t:0,l:0,b:0,r:0};
aroundNodePos.y += Math.min(anchorBorder.t + anchorChildBorder.t, nodeBorder.t + nodeChildBorder.t);
aroundNodePos.h -= Math.min(anchorBorder.t + anchorChildBorder.t, nodeBorder.t+ nodeChildBorder.t) +
Math.min(anchorBorder.b + anchorChildBorder.b, nodeBorder.b + nodeChildBorder.b);
}
}else{
aroundNodePos = anchor;
}
// Compute position and size of visible part of anchor (it may be partially hidden by ancestor nodes w/scrollbars)
if(anchor.parentNode){
// ignore nodes between position:relative and position:absolute
var sawPosAbsolute = domStyle.getComputedStyle(anchor).position == "absolute";
var parent = anchor.parentNode;
while(parent && parent.nodeType == 1 && parent.nodeName != "BODY"){ //ignoring the body will help performance
var parentPos = domGeometry.position(parent, true),
pcs = domStyle.getComputedStyle(parent);
if(/relative|absolute/.test(pcs.position)){
sawPosAbsolute = false;
}
if(!sawPosAbsolute && /hidden|auto|scroll/.test(pcs.overflow)){
var bottomYCoord = Math.min(aroundNodePos.y + aroundNodePos.h, parentPos.y + parentPos.h);
var rightXCoord = Math.min(aroundNodePos.x + aroundNodePos.w, parentPos.x + parentPos.w);
aroundNodePos.x = Math.max(aroundNodePos.x, parentPos.x);
aroundNodePos.y = Math.max(aroundNodePos.y, parentPos.y);
aroundNodePos.h = bottomYCoord - aroundNodePos.y;
aroundNodePos.w = rightXCoord - aroundNodePos.x;
}
if(pcs.position == "absolute"){
sawPosAbsolute = true;
}
parent = parent.parentNode;
}
}
var x = aroundNodePos.x,
y = aroundNodePos.y,
width = "w" in aroundNodePos ? aroundNodePos.w : (aroundNodePos.w = aroundNodePos.width),
height = "h" in aroundNodePos ? aroundNodePos.h : (kernel.deprecated("place.around: dijit/place.__Rectangle: { x:"+x+", y:"+y+", height:"+aroundNodePos.height+", width:"+width+" } has been deprecated. Please use { x:"+x+", y:"+y+", h:"+aroundNodePos.height+", w:"+width+" }", "", "2.0"), aroundNodePos.h = aroundNodePos.height);
// Convert positions arguments into choices argument for _place()
var choices = [];
function push(aroundCorner, corner){
choices.push({
aroundCorner: aroundCorner,
corner: corner,
pos: {
x: {
'L': x,
'R': x + width,
'M': x + (width >> 1)
}[aroundCorner.charAt(1)],
y: {
'T': y,
'B': y + height,
'M': y + (height >> 1)
}[aroundCorner.charAt(0)]
}
})
}
array.forEach(positions, function(pos){
var ltr = leftToRight;
switch(pos){
case "above-centered":
push("TM", "BM");
break;
case "below-centered":
push("BM", "TM");
break;
case "after-centered":
ltr = !ltr;
// fall through
case "before-centered":
push(ltr ? "ML" : "MR", ltr ? "MR" : "ML");
break;
case "after":
ltr = !ltr;
// fall through
case "before":
push(ltr ? "TL" : "TR", ltr ? "TR" : "TL");
push(ltr ? "BL" : "BR", ltr ? "BR" : "BL");
break;
case "below-alt":
ltr = !ltr;
// fall through
case "below":
// first try to align left borders, next try to align right borders (or reverse for RTL mode)
push(ltr ? "BL" : "BR", ltr ? "TL" : "TR");
push(ltr ? "BR" : "BL", ltr ? "TR" : "TL");
break;
case "above-alt":
ltr = !ltr;
// fall through
case "above":
// first try to align left borders, next try to align right borders (or reverse for RTL mode)
push(ltr ? "TL" : "TR", ltr ? "BL" : "BR");
push(ltr ? "TR" : "TL", ltr ? "BR" : "BL");
break;
default:
// To assist dijit/_base/place, accept arguments of type {aroundCorner: "BL", corner: "TL"}.
// Not meant to be used directly. Remove for 2.0.
push(pos.aroundCorner, pos.corner);
}
});
var position = _place(node, choices, layoutNode, {w: width, h: height});
position.aroundNodePos = aroundNodePos;
return position;
}
};
/*=====
place.__Position = {
// x: Integer
// horizontal coordinate in pixels, relative to document body
// y: Integer
// vertical coordinate in pixels, relative to document body
};
place.__Rectangle = {
// x: Integer
// horizontal offset in pixels, relative to document body
// y: Integer
// vertical offset in pixels, relative to document body
// w: Integer
// width in pixels. Can also be specified as "width" for backwards-compatibility.
// h: Integer
// height in pixels. Can also be specified as "height" for backwards-compatibility.
};
=====*/
return dijit.place = place; // setting dijit.place for back-compat, remove for 2.0
});