github.com/zhongdalu/gf@v1.0.0/g/os/gview/gview_instance.go (about)

     1  // Copyright 2017 gf Author(https://github.com/zhongdalu/gf). All Rights Reserved.
     2  //
     3  // This Source Code Form is subject to the terms of the MIT License.
     4  // If a copy of the MIT was not distributed with this file,
     5  // You can obtain one at https://github.com/zhongdalu/gf.
     6  
     7  package gview
     8  
     9  import "github.com/zhongdalu/gf/g/container/gmap"
    10  
    11  const (
    12  	// Default group name for instance usage.
    13  	DEFAULT_INSTANCE_NAME = "default"
    14  )
    15  
    16  var (
    17  	// Instances map.
    18  	instances = gmap.NewStrAnyMap()
    19  )
    20  
    21  // Instance returns an instance of View with default settings.
    22  // The parameter <name> is the name for the instance.
    23  func Instance(name ...string) *View {
    24  	key := DEFAULT_INSTANCE_NAME
    25  	if len(name) > 0 {
    26  		key = name[0]
    27  	}
    28  	return instances.GetOrSetFuncLock(key, func() interface{} {
    29  		return New()
    30  	}).(*View)
    31  }