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
408
409
410
411
----------------------------------------------------------------------------
--- This library contains some operations to generate web pages
--- rendered with [Bootstrap version 4](https://getbootstrap.com/).
---
--- @author Michael Hanus
--- @version July 2020
----------------------------------------------------------------------------

module HTML.Styles.Bootstrap4
 ( bootstrapPage, bootstrapPage2, titledSideMenu
 , primButton, primSmButton, scndButton, scndSmButton
 , infoButton, infoSmButton
 , hrefPrimButton, hrefPrimSmButton, hrefScndButton, hrefScndSmButton
 , hrefInfoButton, hrefInfoSmButton, hrefSuccButton, hrefSuccSmButton
 , hrefWarnButton, hrefWarnSmButton, hrefDangButton, hrefDangSmButton
 , hrefLightButton, hrefLightSmButton, hrefDarkButton, hrefDarkSmButton
 , hrefPrimBlock, hrefScndBlock, hrefInfoBlock
 , hrefPrimSmBlock, hrefScndSmBlock, hrefInfoSmBlock
 , hrefPrimBadge, hrefScndBadge, hrefSuccBadge, hrefInfoBadge
 , hrefWarnBadge, hrefDangBadge, hrefLightBadge, hrefDarkBadge
 , ehrefPrimBadge, ehrefScndBadge, ehrefSuccBadge, ehrefInfoBadge
 , ehrefWarnBadge, ehrefDangBadge, ehrefLightBadge, ehrefDarkBadge
 , hrefNav, hrefNavActive, ehrefNav, ehref, eTarget
 , kbdInput
 ) where

import HTML.Base

----------------------------------------------------------------------------
--- An HTML page rendered with bootstrap with a fixed top navigation bar.
--- @param favicon   - the icon file `favicon.ico` (when empty not included)
--- @param styles    - the style files to be included (typically,
---                    `css/bootstrap.min.css`)
--- @param jsincludes - the JavaScript files to be included (typically,
---                     `.../jquery.js`, `js/bootstrap.min.js`)
--- @param title   - the title of the form
--- @param brand   - the brand shown top left (a URL/title pair)
--- @lefttopmenu   - the menu shown in the left side of the top navigation bar
--- @righttopmenu  - the menu shown in the right side of the top navigation bar
---                  (could be empty)
--- @param columns - number of columns for the left-side menu
---                  (if columns==0, then the left-side menu is omitted)
--- @param sidemenu - the menu shown at the left-side of the main document
---                   (maybe created with 'titledSideMenu')
--- @param header   - the main header (will be rendered with jumbotron style)
--- @param contents - the main contents of the document
--- @param footer   - the footer of the document
bootstrapPage :: String -> [String] -> [String] -> String -> (String,[HtmlExp])
              -> [[HtmlExp]] -> [[HtmlExp]] -> Int -> [HtmlExp] -> [HtmlExp]
              -> [HtmlExp] -> [HtmlExp] -> HtmlPage
bootstrapPage favicon styles jsincludes title brandurltitle lefttopmenu
              righttopmenu leftcols sidemenu header contents footer =
  bootstrapPage2 favicon styles jsincludes title brandurltitle
                 (addNavItemClass lefttopmenu) (addNavItemClass righttopmenu)
                 leftcols sidemenu header contents footer
 where
  addNavItemClass = map (\i -> ("nav-item", i))

--- An HTML page rendered with bootstrap with a fixed top navigation bar
--- and individual classes for the top menu items.
--- @param favicon   - the icon file `favicon.ico` (when empty not included)
--- @param styles    - the style files to be included (typically,
---                    `css/bootstrap.min.css`)
--- @param jsincludes - the JavaScript files to be included (typically,
---                     `.../jquery.js`, `js/bootstrap.min.js`)
--- @param title   - the title of the form
--- @param brand   - the brand shown top left (a URL/title pair)
--- @lefttopmenu   - the menu shown in the left side of the top navigation bar
---                  (with class attribute for the menu items)
--- @righttopmenu  - the menu shown in the right side of the top navigation bar
---                  (with class attribute for the menu items, could be empty)
--- @param columns - number of columns for the left-side menu
---                  (if columns==0, then the left-side menu is omitted)
--- @param sidemenu - the menu shown at the left-side of the main document
---                   (maybe created with 'titledSideMenu')
--- @param header   - the main header (will be rendered with jumbotron style)
--- @param contents - the main contents of the document
--- @param footer   - the footer of the document
bootstrapPage2 :: String -> [String] -> [String] -> String -> (String,[HtmlExp])
               -> [(String,[HtmlExp])] -> [(String,[HtmlExp])]
               -> Int -> [HtmlExp] -> [HtmlExp]
               -> [HtmlExp] -> [HtmlExp] -> HtmlPage
bootstrapPage2 favicon styles jsincludes title brandurltitle
  lefttopmenu righttopmenu leftcols sidemenu header contents footer =
  HtmlPage title
           ([pageEnc "utf-8", responsiveView] ++ icon ++
             map pageCSS styles)
           (bootstrapBody jsincludes brandurltitle
                          lefttopmenu righttopmenu
                          leftcols sidemenu header contents footer)
 where
  -- for a better view on handheld devices:
  responsiveView =
    pageMetaInfo
      [("name","viewport"),
       ("content","width=device-width, initial-scale=1, shrink-to-fit=no")]

  icon = if null favicon
           then []
           else [pageLinkInfo [("rel","shortcut icon"), ("href",favicon)]]

--- Create body of HTML page. Used by `bootstrapPage`.
bootstrapBody :: [String] -> (String,[HtmlExp])
              -> [(String,[HtmlExp])] -> [(String,[HtmlExp])]
              -> Int -> [HtmlExp] -> [HtmlExp]
              -> [HtmlExp] -> [HtmlExp] -> [HtmlExp]
bootstrapBody jsincludes brandurltitle lefttopmenu righttopmenu
              leftcols sidemenu header contents footer =
  topNavigationBar brandurltitle lefttopmenu righttopmenu ++
  [blockstyle "container-fluid"
     ([blockstyle "row"
        (if leftcols==0
           then [blockstyle (bsCols 12)
                   (headerRow ++ contents)]
           else [blockstyle (bsCols leftcols)
                   [blockstyle "card" sidemenu],
                 blockstyle (bsCols (12-leftcols))
                   (headerRow ++ contents)])] ++
       if null footer
        then []
        else [hrule, HtmlStruct "footer" [] footer])] ++
   -- JavaScript includes placed at the end so page loads faster:
  map (\n -> HtmlStruct "script" [("src",n)] []) jsincludes
 where
  bsCols n = "col-sm-" ++ show n ++ " " ++ "col-md-" ++ show n

  -- header row:
  headerRow = if null header
                then []
                else [HtmlStruct "header" [("class","jumbotron")] header]


-- Navigation bar at the top. The first argument is a header element
-- put at the left, the second and third arguments are the left
-- and right menus which will be collapsed if the page is two small.
topNavigationBar :: (String,[HtmlExp])
                 -> [(String,[HtmlExp])] -> [(String,[HtmlExp])]
                 -> [HtmlExp]
topNavigationBar (brandurl,brandtitle) leftmenu rightmenu =
  [HtmlStruct "nav"
    [("class","navbar navbar-expand-md navbar-dark fixed-top bg-dark")]
    [href brandurl brandtitle `addClass` "navbar-brand",
     HtmlStruct "button"
       [("type","button"),("class","navbar-toggler"),
        ("data-toggle","collapse"),
        ("data-target","#topnavbar"),
        ("aria-expanded","false"),
        ("aria-controls","topnavbar"),
        ("aria-label","Toggle navigation")]
       [textstyle "navbar-toggler-icon" ""],
     HtmlStruct "div" [("id","topnavbar"),
                       ("class","collapse navbar-collapse")] $
       [ulistWithItemClass "navbar-nav mr-auto" leftmenu] ++
       if null rightmenu
         then []
         else [ulistWithItemClass "navbar-nav navbar-right" rightmenu]]]

--- Create a side menu containing a title and a list of items:
titledSideMenu :: String -> [[HtmlExp]] -> [HtmlExp]
titledSideMenu title items =
  (if null title
     then []
     else [HtmlStruct "h5" [] [htxt title]]) ++
  [ulistWithClass "nav flex-column" "nav-item" items]

----------------------------------------------------------------------------
-- Some buttons:

--- Primary input button.
primButton :: String -> HtmlHandler -> HtmlExp
primButton label handler =
  button label handler `addClass` "btn btn-primary"

--- Small primary input button.
primSmButton :: String -> HtmlHandler -> HtmlExp
primSmButton label handler =
  button label handler `addClass` "btn btn-sm btn-primary"

--- Secondary input button.
scndButton :: String -> HtmlHandler -> HtmlExp
scndButton label handler =
  button label handler `addClass` "btn btn-secondary"

--- Small secondary input button.
scndSmButton :: String -> HtmlHandler -> HtmlExp
scndSmButton label handler =
  button label handler `addClass` "btn btn-sm btn-secondary"

--- Info input button.
infoButton :: String -> HtmlHandler -> HtmlExp
infoButton label handler =
  button label handler `addClass` "btn btn-info"

--- Small info input button.
infoSmButton :: String -> HtmlHandler -> HtmlExp
infoSmButton label handler =
  button label handler `addClass` "btn btn-sm btn-info"

----------------------------------------------------------------------------
-- Renderings for hypertext references.

--- Hypertext reference rendered as a primary button.
hrefPrimButton :: String -> [HtmlExp] -> HtmlExp
hrefPrimButton ref hexps =
  href ref hexps `addClass` "btn btn-primary"

--- Hypertext reference rendered as a small primary button.
hrefPrimSmButton :: String -> [HtmlExp] -> HtmlExp
hrefPrimSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-primary"

--- Hypertext reference rendered as a secondary button.
hrefScndButton :: String -> [HtmlExp] -> HtmlExp
hrefScndButton ref hexps =
  href ref hexps `addClass` "btn btn-secondary"

--- Hypertext reference rendered as a small secondary button.
hrefScndSmButton :: String -> [HtmlExp] -> HtmlExp
hrefScndSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-secondary"

--- Hypertext reference rendered as an info button.
hrefInfoButton :: String -> [HtmlExp] -> HtmlExp
hrefInfoButton ref hexps =
  href ref hexps `addClass` "btn btn-info"

--- Hypertext reference rendered as a small secondary button.
hrefInfoSmButton :: String -> [HtmlExp] -> HtmlExp
hrefInfoSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-info"

--- Hypertext reference rendered as a success button.
hrefSuccButton :: String -> [HtmlExp] -> HtmlExp
hrefSuccButton ref hexps =
  href ref hexps `addClass` "btn btn-success"

--- Hypertext reference rendered as a small success button.
hrefSuccSmButton :: String -> [HtmlExp] -> HtmlExp
hrefSuccSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-success"

--- Hypertext reference rendered as a warning button.
hrefWarnButton :: String -> [HtmlExp] -> HtmlExp
hrefWarnButton ref hexps =
  href ref hexps `addClass` "btn btn-warning"

--- Hypertext reference rendered as a small warning button.
hrefWarnSmButton :: String -> [HtmlExp] -> HtmlExp
hrefWarnSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-warning"

--- Hypertext reference rendered as a danger button.
hrefDangButton :: String -> [HtmlExp] -> HtmlExp
hrefDangButton ref hexps =
  href ref hexps `addClass` "btn btn-danger"

--- Hypertext reference rendered as a small danger button.
hrefDangSmButton :: String -> [HtmlExp] -> HtmlExp
hrefDangSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-danger"

--- Hypertext reference rendered as a light button.
hrefLightButton :: String -> [HtmlExp] -> HtmlExp
hrefLightButton ref hexps =
  href ref hexps `addClass` "btn btn-light"

--- Hypertext reference rendered as a small light button.
hrefLightSmButton :: String -> [HtmlExp] -> HtmlExp
hrefLightSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-light"

--- Hypertext reference rendered as a dark button.
hrefDarkButton :: String -> [HtmlExp] -> HtmlExp
hrefDarkButton ref hexps =
  href ref hexps `addClass` "btn btn-dark"

--- Hypertext reference rendered as a small dark button.
hrefDarkSmButton :: String -> [HtmlExp] -> HtmlExp
hrefDarkSmButton ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-dark"


-- Hypertext reference rendered as a primary block button.
hrefPrimBlock :: String -> [HtmlExp] -> HtmlExp
hrefPrimBlock ref hexps =
  href ref hexps `addClass` "btn btn-primary btn-block"

-- Hypertext reference rendered as a secondary block button.
hrefScndBlock :: String -> [HtmlExp] -> HtmlExp
hrefScndBlock ref hexps =
  href ref hexps `addClass` "btn btn-secondary btn-block"

--- Hypertext reference rendered as an info block button.
hrefInfoBlock :: String -> [HtmlExp] -> HtmlExp
hrefInfoBlock ref hexps =
  href ref hexps `addClass` "btn btn-info btn-block"

-- Hypertext reference rendered as a small primary block button.
hrefPrimSmBlock :: String -> [HtmlExp] -> HtmlExp
hrefPrimSmBlock ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-primary btn-block"

-- Hypertext reference rendered as a small secondary block button.
hrefScndSmBlock :: String -> [HtmlExp] -> HtmlExp
hrefScndSmBlock ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-secondary btn-block"

-- Hypertext reference rendered as a small info block button.
hrefInfoSmBlock :: String -> [HtmlExp] -> HtmlExp
hrefInfoSmBlock ref hexps =
  href ref hexps `addClass` "btn btn-sm btn-info btn-block"

----------------------------------------------------------------------------
-- Badges

--- Hypertext reference rendered as a primary badge.
hrefPrimBadge :: String -> [HtmlExp] -> HtmlExp
hrefPrimBadge ref hexps = href ref hexps `addClass` "badge badge-primary"

--- Hypertext reference rendered as a secondary badge.
hrefScndBadge :: String -> [HtmlExp] -> HtmlExp
hrefScndBadge ref hexps = href ref hexps `addClass` "badge badge-secondary"

--- Hypertext reference rendered as a success badge.
hrefSuccBadge :: String -> [HtmlExp] -> HtmlExp
hrefSuccBadge ref hexps = href ref hexps `addClass` "badge badge-success"

--- Hypertext reference rendered as an info badge.
hrefInfoBadge :: String -> [HtmlExp] -> HtmlExp
hrefInfoBadge ref hexps = href ref hexps `addClass` "badge badge-info"

--- Hypertext reference rendered as a warning badge.
hrefWarnBadge :: String -> [HtmlExp] -> HtmlExp
hrefWarnBadge ref hexps = href ref hexps `addClass` "badge badge-warning"

--- Hypertext reference rendered as a danger badge.
hrefDangBadge :: String -> [HtmlExp] -> HtmlExp
hrefDangBadge ref hexps = href ref hexps `addClass` "badge badge-danger"

--- Hypertext reference rendered as a light badge.
hrefLightBadge :: String -> [HtmlExp] -> HtmlExp
hrefLightBadge ref hexps = href ref hexps `addClass` "badge badge-light"

--- Hypertext reference rendered as a dark badge.
hrefDarkBadge :: String -> [HtmlExp] -> HtmlExp
hrefDarkBadge ref hexps = href ref hexps `addClass` "badge badge-dark"

--- External hypertext reference rendered as a primary badge.
ehrefPrimBadge :: String -> [HtmlExp] -> HtmlExp
ehrefPrimBadge ref hexps = eTarget $ hrefPrimBadge ref hexps

--- External hypertext reference rendered as a secondary badge.
ehrefScndBadge :: String -> [HtmlExp] -> HtmlExp
ehrefScndBadge ref hexps = eTarget $ hrefScndBadge ref hexps

--- External hypertext reference rendered as a success badge.
ehrefSuccBadge :: String -> [HtmlExp] -> HtmlExp
ehrefSuccBadge ref hexps = eTarget $ hrefSuccBadge ref hexps

--- External hypertext reference rendered as an info badge.
ehrefInfoBadge :: String -> [HtmlExp] -> HtmlExp
ehrefInfoBadge ref hexps = eTarget $ hrefInfoBadge ref hexps

--- External hypertext reference rendered as a warning badge.
ehrefWarnBadge :: String -> [HtmlExp] -> HtmlExp
ehrefWarnBadge ref hexps = eTarget $ hrefWarnBadge ref hexps

--- External hypertext reference rendered as a danger badge.
ehrefDangBadge :: String -> [HtmlExp] -> HtmlExp
ehrefDangBadge ref hexps = eTarget $ hrefDangBadge ref hexps

--- External hypertext reference rendered as a light badge.
ehrefLightBadge :: String -> [HtmlExp] -> HtmlExp
ehrefLightBadge ref hexps = eTarget $ hrefLightBadge ref hexps

--- External hypertext reference rendered as a dark badge.
ehrefDarkBadge :: String -> [HtmlExp] -> HtmlExp
ehrefDarkBadge ref hexps = eTarget $ hrefDarkBadge ref hexps

----------------------------------------------------------------------------
-- Navigation links

--- Hypertext reference in navigations.
hrefNav :: String -> [HtmlExp] -> HtmlExp
hrefNav url hexp = href url hexp `addClass` "nav-link"

--- Active hypertext reference in navigations.
hrefNavActive :: String -> [HtmlExp] -> HtmlExp
hrefNavActive url hexp = ehref url hexp `addClass` "nav-link active"

--- External hypertext reference in navigations.
ehrefNav :: String -> [HtmlExp] -> HtmlExp
ehrefNav url hexp = ehref url hexp `addClass` "nav-link"

--- An external hypertext reference which opens on a new page.
ehref :: String -> [HtmlExp] -> HtmlExp
ehref ref hexp = eTarget $ href ref hexp

--- Transforms a hypertext reference into an external one
--- which opens on a new page.
--- Basically, the attribute `target="_blank"` is added.
eTarget :: HtmlExp -> HtmlExp
eTarget hexp = hexp `addAttr` ("target","_blank")

--------------------------------------------------------------------------

--- Render an HTML expression as keyboard or user input.
kbdInput :: [HtmlExp] -> HtmlExp
kbdInput = HtmlStruct "kbd" []

----------------------------------------------------------------------------