-
Notifications
You must be signed in to change notification settings - Fork 6
/
Copy pathexample_test.go
386 lines (345 loc) · 7.81 KB
/
example_test.go
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
package htmlgo_test
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"os"
. "github.com/theplant/htmlgo"
)
/*
Create a simple div, Text will be escaped by html
*/
func ExampleTag_01simplediv() {
banner := "We write html in Go"
comp := Div(
Text("123<h1>"),
Textf("Hello, %s", banner),
Br(),
)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <div>123<h1>Hello, We write html in Go
// <br></div>
}
/*
Create a full html page
*/
func ExampleTag_02fullhtml() {
comp := HTML(
Head(
Meta().Charset("utf8"),
Title("My test page"),
),
Body(
Img("images/firefox-icon.png").Alt("My test image"),
),
)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <!DOCTYPE html>
//
// <html>
// <head>
// <meta charset='utf8'></meta>
//
// <title>My test page</title>
// </head>
//
// <body>
// <img src='images/firefox-icon.png' alt='My test image'></img>
// </body>
// </html>
}
/*
Use RawHTML and Component
*/
func ExampleTag_03rawhtmlandcomponent() {
userProfile := func(username string, avatarURL string) HTMLComponent {
return ComponentFunc(func(ctx context.Context) (r []byte, err error) {
return Div(
H1(username).Class("profileName"),
Img(avatarURL).Class("profileImage"),
RawHTML("<svg>complicated svg</svg>\n"),
).Class("userProfile").MarshalHTML(ctx)
})
}
comp := Ul(
Li(
userProfile("felix<h1>", "http://image.com/img1.png"),
),
Li(
userProfile("john", "http://image.com/img2.png"),
),
)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <ul>
// <li>
// <div class='userProfile'>
// <h1 class='profileName'>felix<h1></h1>
//
// <img src='http://image.com/img1.png' class='profileImage'></img>
// <svg>complicated svg</svg>
// </div>
// </li>
//
// <li>
// <div class='userProfile'>
// <h1 class='profileName'>john</h1>
//
// <img src='http://image.com/img2.png' class='profileImage'></img>
// <svg>complicated svg</svg>
// </div>
// </li>
// </ul>
}
type MySelectBuilder struct {
options [][]string
selected string
}
func MySelect() *MySelectBuilder {
return &MySelectBuilder{}
}
func (b *MySelectBuilder) Options(opts [][]string) (r *MySelectBuilder) {
b.options = opts
return b
}
func (b *MySelectBuilder) Selected(selected string) (r *MySelectBuilder) {
b.selected = selected
return b
}
func (b *MySelectBuilder) MarshalHTML(ctx context.Context) (r []byte, err error) {
opts := []HTMLComponent{}
for _, op := range b.options {
var opt HTMLComponent
if op[0] == b.selected {
opt = Option(op[1]).Value(op[0]).Attr("selected", "true")
} else {
opt = Option(op[1]).Value(op[0])
}
opts = append(opts, opt)
}
return Select(opts...).MarshalHTML(ctx)
}
/*
More complicated customized component
*/
func ExampleTag_04newcomponentstyle() {
/*
Define MySelect as follows:
type MySelectBuilder struct {
options [][]string
selected string
}
func MySelect() *MySelectBuilder {
return &MySelectBuilder{}
}
func (b *MySelectBuilder) Options(opts [][]string) (r *MySelectBuilder) {
b.options = opts
return b
}
func (b *MySelectBuilder) Selected(selected string) (r *MySelectBuilder) {
b.selected = selected
return b
}
func (b *MySelectBuilder) MarshalHTML(ctx context.Context) (r []byte, err error) {
opts := []HTMLComponent{}
for _, op := range b.options {
var opt HTMLComponent
if op[0] == b.selected {
opt = Option(op[1]).Value(op[0]).Attr("selected", "true")
} else {
opt = Option(op[1]).Value(op[0])
}
opts = append(opts, opt)
}
return Select(opts...).MarshalHTML(ctx)
}
*/
comp := MySelect().Options([][]string{
{"1", "label 1"},
{"2", "label 2"},
{"3", "label 3"},
}).Selected("2")
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <select>
// <option value='1'>label 1</option>
//
// <option value='2' selected='true'>label 2</option>
//
// <option value='3'>label 3</option>
// </select>
}
/*
Write a little bit of JavaScript and stylesheet
*/
func ExampleTag_05javascript() {
comp := Div(
Button("Hello").Id("hello"),
Style(`
.container {
background-color: red;
}
`),
Script(`
var b = document.getElementById("hello")
b.onclick = function(e){
alert("Hello");
}
`),
).Class("container")
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <div class='container'>
// <button id='hello'>Hello</button>
//
// <style type='text/css'>
// .container {
// background-color: red;
// }
// </style>
//
// <script type='text/javascript'>
// var b = document.getElementById("hello")
// b.onclick = function(e){
// alert("Hello");
// }
// </script>
// </div>
}
/*
An example about how to integrate into http.Handler, and how to do layout, and how to use context.
*/
func ExampleTag_06httphandler() {
type User struct {
Name string
}
userStatus := func() HTMLComponent {
return ComponentFunc(func(ctx context.Context) (r []byte, err error) {
if currentUser, ok := ctx.Value("currentUser").(*User); ok {
return Div(
Text(currentUser.Name),
).Class("username").MarshalHTML(ctx)
}
return Div(Text("Login")).Class("login").MarshalHTML(ctx)
})
}
myHeader := func() HTMLComponent {
return Div(
Text("header"),
userStatus(),
).Class("header")
}
myFooter := func() HTMLComponent {
return Div(Text("footer")).Class("footer")
}
layout := func(in HTMLComponent) (out HTMLComponent) {
out = HTML(
Head(
Meta().Charset("utf8"),
),
Body(
myHeader(),
in,
myFooter(),
),
)
return
}
getLoginUserFromCookie := func(r *http.Request) *User {
return &User{Name: "felix"}
}
homeHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
user := getLoginUserFromCookie(r)
ctx := context.WithValue(context.TODO(), "currentUser", user)
root := Div(
Text("This is my home page"),
)
Fprint(w, layout(root), ctx)
})
w := httptest.NewRecorder()
r := httptest.NewRequest("GET", "/", nil)
homeHandler.ServeHTTP(w, r)
fmt.Println(w.Body.String())
//Output:
// <!DOCTYPE html>
//
// <html>
// <head>
// <meta charset='utf8'></meta>
// </head>
//
// <body>
// <div class='header'>header
// <div class='username'>felix</div>
// </div>
//
// <div>This is my home page</div>
//
// <div class='footer'>footer</div>
// </body>
// </html>
}
/*
An example show how to set different type of attributes
*/
func ExampleTag_07MutipleTypeAttrs() {
type MoreData struct {
Name string
Count int
}
comp := Div(
Input("username").
Type("checkbox").
Attr("checked", true).
Attr("more-data", &MoreData{Name: "felix", Count: 100}).
Attr("max-length", 10),
Input("username2").
Type("checkbox").
Attr("checked", false),
)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <div>
// <input name='username' type='checkbox' checked more-data='{"Name":"felix","Count":100}' max-length='10'></input>
//
// <input name='username2' type='checkbox'></input>
// </div>
}
/*
An example show how to set styles
*/
func ExampleTag_08styles() {
comp := Div().
StyleIf("background-color:red; border:1px solid red;", true).
StyleIf("color:blue", true)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <div style='background-color:red; border:1px solid red; color:blue;'></div>
}
/*
An example to use If, `Iff` is for body to passed in as an func for the body depends on if condition not to be nil, `If` is for directly passed in HTMLComponent
*/
func ExampleTag_09iff() {
type Person struct {
Age int
}
var p *Person
name := "Leon"
comp := Div(
Iff(p != nil && p.Age > 18, func() HTMLComponent {
return Div().Text(name + ": Age > 18")
}).ElseIf(p == nil, func() HTMLComponent {
return Div().Text("No person named " + name)
}).Else(func() HTMLComponent {
return Div().Text(name + ":Age <= 18")
}),
)
Fprint(os.Stdout, comp, context.TODO())
//Output:
// <div>
// <div>No person named Leon</div>
// </div>
}