Class: Puppeteer::Browser

Inherits:
Object
  • Object
show all
Includes:
DebugPrint, EventCallbackable, IfPresent
Defined in:
lib/puppeteer/browser.rb

Defined Under Namespace

Classes: TargetAlreadyExistError, TargetNotExistError, Version

Class Method Summary collapse

Instance Method Summary collapse

Methods included from IfPresent

#if_present

Methods included from EventCallbackable

#add_event_listener, #emit_event, #observe_first, #on_event, #remove_event_listener

Methods included from DebugPrint

#debug_print, #debug_puts

Constructor Details

#initialize(connection:, context_ids:, ignore_https_errors:, default_viewport:, process:, close_callback:) ⇒ Browser

Returns a new instance of Browser.

Parameters:



35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/puppeteer/browser.rb', line 35

def initialize(connection:, context_ids:, ignore_https_errors:, default_viewport:, process:, close_callback:)
  @ignore_https_errors = ignore_https_errors
  @default_viewport = default_viewport
  @process = process
  @connection = connection
  @close_callback = close_callback

  @default_context = Puppeteer::BrowserContext.new(@connection, self, nil)
  @contexts = {}
  context_ids.each do |context_id|
    @contexts[context_id] = Puppeteer::BrowserContext.new(@connection, self, context_id)
  end
  @targets = {}
  @wait_for_creating_targets = {}
  @connection.on_event(ConnectionEmittedEvents::Disconnected) do
    emit_event(BrowserEmittedEvents::Disconnected)
  end
  @connection.on_event('Target.targetCreated', &method(:handle_target_created))
  @connection.on_event('Target.targetDestroyed', &method(:handle_target_destroyed))
  @connection.on_event('Target.targetInfoChanged', &method(:handle_target_info_changed))
end

Class Method Details

.create(connection:, context_ids:, ignore_https_errors:, default_viewport:, process:, close_callback:) ⇒ Object

Parameters:



16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/puppeteer/browser.rb', line 16

def self.create(connection:, context_ids:, ignore_https_errors:, default_viewport:, process:, close_callback:)
  browser = Puppeteer::Browser.new(
    connection: connection,
    context_ids: context_ids,
    ignore_https_errors: ignore_https_errors,
    default_viewport: default_viewport,
    process: process,
    close_callback: close_callback,
  )
  connection.send_message('Target.setDiscoverTargets', discover: true)
  browser
end

Instance Method Details

#async_wait_for_target(predicate: , timeout: nil) ⇒ Object

Parameters:



255
 
# File 'lib/puppeteer/browser.rb', line 255

define_async_method :async_wait_for_target

#browser_contexts ⇒ Object 



87
88
89
 
# File 'lib/puppeteer/browser.rb', line 87

def browser_contexts
  [@default_context].concat(@contexts.values)
end

#close ⇒ Object 



272
273
274
275
 
# File 'lib/puppeteer/browser.rb', line 272

def close
  @close_callback.call
  disconnect
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


281
282
283
 
# File 'lib/puppeteer/browser.rb', line 281

def connected?
  !@connection.closed?
end

#create_incognito_browser_context ⇒ Puppeteer::BrowserContext

Returns:



81
82
83
84
85
 
# File 'lib/puppeteer/browser.rb', line 81

def create_incognito_browser_context
  result = @connection.send_message('Target.createBrowserContext')
  browser_context_id = result['browserContextId']
  @contexts[browser_context_id] = Puppeteer::BrowserContext.new(@connection, self, browser_context_id)
end

#create_page_in_context(context_id) ⇒ !Promise<!Puppeteer.Page>

Parameters:

  • contextId (?string)

Returns:



185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
 
# File 'lib/puppeteer/browser.rb', line 185

def create_page_in_context(context_id)
  create_target_params = { url: 'about:blank' }
  if context_id
    create_target_params[:browserContextId] = context_id
  end
  result = @connection.send_message('Target.createTarget', **create_target_params)
  target_id = result['targetId']
  target = @targets[target_id]
  unless target
    # Target.targetCreated is often notified before the response of Target.createdTarget.
    # https://github.com/YusukeIwaki/puppeteer-ruby/issues/91
    # D, [2021-04-07T03:00:10.125241 #187] DEBUG -- : SEND >> {"method":"Target.createTarget","params":{"url":"about:blank","browserContextId":"56A86FC3391B50180CF9A6450A0D8C21"},"id":3}
    # D, [2021-04-07T03:00:10.142396 #187] DEBUG -- : RECV << {"id"=>3, "result"=>{"targetId"=>"A518447C415A1A3E1A8979454A155632"}}
    # D, [2021-04-07T03:00:10.145360 #187] DEBUG -- : RECV << {"method"=>"Target.targetCreated", "params"=>{"targetInfo"=>{"targetId"=>"A518447C415A1A3E1A8979454A155632", "type"=>"page", "title"=>"", "url"=>"", "attached"=>false, "canAccessOpener"=>false, "browserContextId"=>"56A86FC3391B50180CF9A6450A0D8C21"}}}
    # This is just a workaround logic...
    @wait_for_creating_targets[target_id] = resolvable_future
    target = await @wait_for_creating_targets[target_id]
  end
  await target.initialized_promise
  await target.page
end

#default_browser_context ⇒ Puppeteer::BrowserContext

Returns:



92
93
94
 
# File 'lib/puppeteer/browser.rb', line 92

def default_browser_context
  @default_context
end

#disconnect ⇒ Object 



277
278
279
 
# File 'lib/puppeteer/browser.rb', line 277

def disconnect
  @connection.dispose
end

#dispose_context(context_id) ⇒ Object

Parameters:

  • context_id (String) 


97
98
99
100
 
# File 'lib/puppeteer/browser.rb', line 97

def dispose_context(context_id)
  @connection.send_message('Target.disposeBrowserContext', browserContextId: context_id)
  @contexts.delete(context_id)
end

#handle_target_created(event) ⇒ Object

Parameters:

  • event (!Protocol.Target.targetCreatedPayload) 


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
 
# File 'lib/puppeteer/browser.rb', line 109

def handle_target_created(event)
  target_info = Puppeteer::Target::TargetInfo.new(event['targetInfo'])
  browser_context_id = target_info.browser_context_id
  context =
    if browser_context_id && @contexts.has_key?(browser_context_id)
      @contexts[browser_context_id]
    else
      @default_context
    end

  if @targets[target_info.target_id]
    raise TargetAlreadyExistError.new
  end
  target = Puppeteer::Target.new(
    target_info: target_info,
    browser_context: context,
    session_factory: -> { @connection.create_session(target_info) },
    ignore_https_errors: @ignore_https_errors,
    default_viewport: @default_viewport,
  )
  @targets[target_info.target_id] = target
  if_present(@wait_for_creating_targets.delete(target_info.target_id)) do |promise|
    promise.fulfill(target)
  end
  if await target.initialized_promise
    emit_event(BrowserEmittedEvents::TargetCreated, target)
    context.emit_event(BrowserContextEmittedEvents::TargetCreated, target)
  end
end

#handle_target_destroyed(event) ⇒ Object

Parameters:

  • event ({targetId: string}) 


140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/puppeteer/browser.rb', line 140

def handle_target_destroyed(event)
  target_id = event['targetId']
  target = @targets[target_id]
  target.ignore_initialize_callback_promise
  @targets.delete(target_id)
  if_present(@wait_for_creating_targets.delete(target_id)) do |promise|
    promise.reject('target destroyed')
  end
  target.closed_callback
  if await target.initialized_promise
    emit_event(BrowserEmittedEvents::TargetDestroyed, target)
    target.browser_context.emit_event(BrowserContextEmittedEvents::TargetDestroyed, target)
  end
end

#handle_target_info_changed(event) ⇒ Object

Parameters:

  • event (!Protocol.Target.targetInfoChangedPayload) 


162
163
164
165
166
167
168
169
170
171
172
 
# File 'lib/puppeteer/browser.rb', line 162

def handle_target_info_changed(event)
  target_info = Puppeteer::Target::TargetInfo.new(event['targetInfo'])
  target = @targets[target_info.target_id] or raise TargetNotExistError.new
  previous_url = target.url
  was_initialized = target.initialized?
  target.handle_target_info_changed(target_info)
  if was_initialized && previous_url != target.url
    emit_event(BrowserEmittedEvents::TargetChanged, target)
    target.browser_context.emit_event(BrowserContextEmittedEvents::TargetChanged, target)
  end
end

#new_page ⇒ Object 



179
180
181
 
# File 'lib/puppeteer/browser.rb', line 179

def new_page
  @default_context.new_page
end

#on(event_name, &block) ⇒ Object

Parameters:

  • event_name (Symbol) —

    either of :disconnected, :targetcreated, :targetchanged, :targetdestroyed



58
59
60
61
62
63
64
 
# File 'lib/puppeteer/browser.rb', line 58

def on(event_name, &block)
  unless BrowserEmittedEvents.values.include?(event_name.to_s)
    raise ArgumentError.new("Unknown event name: #{event_name}. Known events are #{BrowserEmittedEvents.values.to_a.join(", ")}")
  end

  super(event_name.to_s, &block)
end

#once(event_name, &block) ⇒ Object

Parameters:

  • event_name (Symbol) 


67
68
69
70
71
72
73
 
# File 'lib/puppeteer/browser.rb', line 67

def once(event_name, &block)
  unless BrowserEmittedEvents.values.include?(event_name.to_s)
    raise ArgumentError.new("Unknown event name: #{event_name}. Known events are #{BrowserEmittedEvents.values.to_a.join(", ")}")
  end

  super(event_name.to_s, &block)
end

#pages ⇒ !Promise<!Array<!Puppeteer.Page>>

Returns:



258
259
260
 
# File 'lib/puppeteer/browser.rb', line 258

def pages
  browser_contexts.flat_map(&:pages)
end

#process ⇒ Puppeteer::BrowserRunner::BrowserProcess

Returns:



76
77
78
 
# File 'lib/puppeteer/browser.rb', line 76

def process
  @process
end

#target ⇒ !Target

Returns:



214
215
216
 
# File 'lib/puppeteer/browser.rb', line 214

def target
  targets.find { |target| target.type == 'browser' }
end

#targets ⇒ !Array<!Target>

Returns:



208
209
210
 
# File 'lib/puppeteer/browser.rb', line 208

def targets
  @targets.values.select { |target| target.initialized? }
end

#user_agent ⇒ String

Returns:

  • (String) 


268
269
270
 
# File 'lib/puppeteer/browser.rb', line 268

def user_agent
  get_version.user_agent
end

#version ⇒ String

Returns:

  • (String) 


263
264
265
 
# File 'lib/puppeteer/browser.rb', line 263

def version
  get_version.product
end

#wait_for_target(predicate:, timeout: nil) ⇒ Puppeteer::Target

Parameters:

Returns:



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
 
# File 'lib/puppeteer/browser.rb', line 225

def wait_for_target(predicate:, timeout: nil)
  timeout_helper = Puppeteer::TimeoutHelper.new('target', timeout_ms: timeout, default_timeout_ms: 30000)
  existing_target = targets.find { |target| predicate.call(target) }
  return existing_target if existing_target

  event_listening_ids = []
  target_promise = resolvable_future
  event_listening_ids << add_event_listener(BrowserEmittedEvents::TargetCreated) do |target|
    if predicate.call(target)
      target_promise.fulfill(target)
    end
  end
  event_listening_ids << add_event_listener(BrowserEmittedEvents::TargetChanged) do |target|
    if predicate.call(target)
      target_promise.fulfill(target)
    end
  end

  begin
    timeout_helper.with_timeout do
      target_promise.value!
    end
  ensure
    remove_event_listener(*event_listening_ids)
  end
end

#ws_endpoint ⇒ String

Returns:

  • (String) 


175
176
177
 
# File 'lib/puppeteer/browser.rb', line 175

def ws_endpoint
  @connection.url
end