webmcp

annotate framework/env/ui/_partial_load_js.lua @ 96:db4bf2e6513c

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Fixed errors in sample webserver configurations and request/__init.lua
author jbe
date Wed Oct 10 18:41:11 2012 +0200 (2012-10-10)
parents f3d3203cd2e4
children
rev   line source
jbe/bsw@11 1 --[[--
jbe@12 2 ui._partial_load_js(
jbe@12 3 {
jbe@12 4 module = module,
jbe@12 5 view = view,
jbe@12 6 id = id,
jbe@12 7 params = params,
jbe@12 8 target = target
jbe@12 9 },
jbe@12 10 mode = mode
jbe/bsw@11 11 }
jbe/bsw@11 12
jbe@12 13 This function is not supposed to be called directly, but only to be used by
jbe@12 14 ui.link{...} and ui.form{...}.
jbe@12 15
jbe@12 16 It returns a JavaScript which can be used for onclick or onsubmit
jbe@12 17 attributes in HTML to cause a partial load of contents. Behaviour differs
jbe@12 18 for the following cases:
jbe@12 19 a) module, view and target (and optionally id) are given as parameters
jbe@12 20 b) neither module, view, id, nor target are given as parameters
jbe@12 21
jbe@12 22 In case of a) the function will create a JavaScript which requests the
jbe@12 23 given view (optionally with the given id and params) as JSON data.
jbe@12 24
jbe@12 25 In case of b) the function will create a JavaScript requesting the view
jbe@12 26 specified by the next outer ui.partial{...} call as JSON data. Request
jbe@12 27 parameters specified by previous calls of add_partial_param_names({...})
jbe@12 28 are copied from the GET/POST parameters of the current request, while they
jbe@12 29 can be overwritten using the "params" argument to this function.
jbe/bsw@11 30
jbe@12 31 If there is no outer ui.partial{...} call in case b), then this function
jbe@12 32 returns nil.
jbe@12 33
jbe@12 34 The called URL contains "_webmcp_json_slots[]" as GET parameters to
jbe@12 35 indicate that slot contents should be returned as a JSON object, instead of
jbe@12 36 being inserted to a page layout.
jbe@12 37
jbe@12 38 TODO: Currently the slots requested are "default", "trace" and
jbe@12 39 "system_error". The target for the slot "default" is passed as argument to
jbe@12 40 this function or to ui.partial{...}. The targets for the slots "trace" and
jbe@12 41 "system_error" are "trace" and "system_error". This is hardcoded and should
jbe@12 42 be possible to change in future. The JavaScript will fail, if there are no
jbe@12 43 HTML elements with id's "trace" and "system_error".
jbe@12 44
jbe@12 45 A mode can be passed as second parameter to this function. When this mode
jbe@12 46 is "nil" or non existent, the function creates JavaScript code to be used
jbe@12 47 as onclick event for normal (GET) links. When mode is set to "form_normal"
jbe@12 48 or "form_action", the returned code can be used as onsubmit event of web
jbe@12 49 forms. "form_normal" is used when the form calls a view, "form_action" is
jbe@12 50 used when the form calls an action.
jbe/bsw@11 51
jbe/bsw@11 52 --]]--
jbe/bsw@11 53
jbe/bsw@11 54 function ui._partial_load_js(args, mode)
jbe/bsw@11 55 local args = args or {}
jbe/bsw@11 56 local module
jbe/bsw@11 57 local view
jbe/bsw@11 58 local id
jbe/bsw@11 59 local params = {}
jbe/bsw@11 60 local target
jbe/bsw@11 61 if args.view and args.target then
jbe/bsw@11 62 module = args.module
jbe/bsw@11 63 view = args.view
jbe/bsw@11 64 id = args.id
jbe/bsw@11 65 target = args.target
jbe/bsw@11 66 elseif not args.view and not args.target then
jbe/bsw@11 67 if not ui._partial_state then
jbe/bsw@11 68 return nil
jbe/bsw@11 69 end
jbe/bsw@11 70 module = ui._partial_state.module
jbe/bsw@11 71 view = ui._partial_state.view
jbe/bsw@11 72 id = ui._partial_state.id
jbe/bsw@11 73 target = ui._partial_state.target
jbe/bsw@11 74 else
jbe/bsw@11 75 error("Unexpected arguments passed to ui._partial_load_js{...}")
jbe/bsw@11 76 end
jbe/bsw@11 77
jbe/bsw@11 78 if ui._partial_state then
jbe@12 79 -- TODO: do this only if args.view and args.target are unset!?
jbe/bsw@11 80 if ui._partial_state.params then
jbe/bsw@11 81 for key, value in pairs(ui._partial_state.params) do
jbe/bsw@11 82 params[key] = value
jbe/bsw@11 83 end
jbe/bsw@11 84 end
jbe/bsw@11 85 for param_name, dummy in pairs(ui._partial_state.param_name_hash) do
jbe/bsw@11 86 params[param_name] = cgi.params[param_name]
jbe/bsw@11 87 end
jbe/bsw@11 88 end
jbe/bsw@11 89 if args.params then
jbe/bsw@11 90 for key, value in pairs(args.params) do
jbe/bsw@11 91 params[key] = value
jbe/bsw@11 92 end
jbe/bsw@11 93 end
jbe/bsw@11 94 local encoded_url = encode.json(
jbe/bsw@11 95 encode.url{
jbe/bsw@11 96 module = module,
jbe/bsw@11 97 view = view,
jbe/bsw@11 98 id = id,
jbe/bsw@11 99 params = params
jbe/bsw@11 100 }
jbe/bsw@11 101 )
jbe/bsw@11 102
jbe/bsw@11 103 if mode == "form_normal" then
jbe/bsw@11 104 -- NOTE: action in "action_mode" refers to WebMCP actions, while action
jbe/bsw@11 105 -- in "this.action" refers to the action attribute of HTML forms
jbe/bsw@11 106 slot.put('this.action = ', encoded_url, '; ')
jbe/bsw@11 107 end
jbe/bsw@11 108
jbe/bsw@11 109 return slot.use_temporary(function()
jbe/bsw@11 110 slot.put(
jbe/bsw@11 111 'partialMultiLoad({',
jbe/bsw@11 112 -- mapping:
jbe/bsw@11 113 '"trace": "trace", "system_error": "system_error", ',
jbe/bsw@11 114 encode.json(target), ': "default" }, ',
jbe/bsw@11 115 -- tempLoadingContents:
jbe/bsw@11 116 '{}, ',
jbe/bsw@11 117 -- failureContents:
jbe/bsw@11 118 '"error", ',
jbe/bsw@11 119 -- url:
jbe/bsw@11 120 (mode == "form_normal" or mode == "form_action") and (
jbe/bsw@11 121 'this'
jbe/bsw@11 122 ) or (
jbe/bsw@11 123 encoded_url
jbe/bsw@11 124 ), ', ',
jbe/bsw@11 125 -- urlParams:
jbe/bsw@11 126 '"_webmcp_json_slots[]=default&_webmcp_json_slots[]=trace&_webmcp_json_slots[]=system_error", ',
jbe/bsw@11 127 -- postParams:
jbe/bsw@11 128 '{}, ',
jbe/bsw@11 129 -- successHandler:
jbe/bsw@11 130 'function() {}, ',
jbe/bsw@11 131 -- failureHandler:
jbe/bsw@11 132 'function() {} ',
jbe/bsw@11 133 '); ',
jbe/bsw@11 134 'return false;'
jbe/bsw@11 135 )
jbe/bsw@11 136 end)
jbe/bsw@11 137 end

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