mirror of
https://github.com/flynx/ImageGrid.git
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375 lines
10 KiB
JavaScript
Executable File
375 lines
10 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
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(function(require){ var module={} // make module AMD/node compatible...
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/*********************************************************************/
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var util = require('lib/util')
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var object = require('lib/object')
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var actions = require('lib/actions')
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var features = require('lib/features')
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var core = require('features/core')
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/*********************************************************************/
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// XXX experimental...
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// XXX need the other .location stuff to be visible/accessible...
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// ...now this only shows path...
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var LocationProto = {
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get path(){
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return this.__actions.__location.path
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},
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set path(value){
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this.__actions.location = value
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},
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__init__: function(actions){
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this.__actions = actions
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// XXX this does not work...
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// ...the oother way around seems best:
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// actions.__location.__proto__ = this
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//this.__proto__ = actions.__location
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},
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}
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var Location = object.makeConstructor('Location', LocationProto)
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/*********************************************************************/
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// XXX add url scheme support...
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// <method>://<path>#<current>?<other>
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// XXX add .hash support for in-location .current setting when no index
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// available...
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// XXX this should provide mechaincs to define location handlers, i.e.
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// a set for loader/saver per location type (.method)
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// XXX revise the wording...
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// .path or .url
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var LocationActions = actions.Actions({
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config: {
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'default-load-method': null,
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},
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// Format:
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// {
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// path: <base-path>,
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// method: <load-method>,
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// current: <current-gid>,
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// ...
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// }
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//
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// NOTE: these will remove the trailing '/' (or '\') from .path
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// unless the path is root (i.e. "/")...
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// ...this is mainly to facilitate better browse support, i.e.
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// to open the dir (open parent + select current) and not
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// within the dir
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__location: null,
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get location(){
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this.__location = this.__location || {}
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var b = this.__location.path
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if(b && b != '/' && b != '\\'){
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b = util.normalizePath(b)
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}
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if(b){
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this.__location.path = b
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}
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this.__location.current = this.current
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return this.__location
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//return Location(this)
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},
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// NOTE: this is a shorthand for .loadLocation(..)
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// NOTE: the method is needed to enable us to get the action return
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// value...
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set location(value){
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this.loadLocation(value) },
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clearLoaction: ['File/Clear location',
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function(){ delete this.__location }],
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// Load location...
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//
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// Reload current location...
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// .loadLocation()
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// -> result
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//
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// Load new path using current location method and data...
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// .loadLocation(path)
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// -> result
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//
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// Load new location...
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// .loadLocation(location)
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// -> result
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// NOTE: this is almost the same as .location = location but
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// here we can access the call return value.
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//
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// NOTE: .location will be set by the .load handler...
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//
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// XXX not sure about where to set the .__location -- see inside...
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loadLocation: ['- File/Load location',
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function(location){
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location = location || this.location
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// got a path -> load using current location data...
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if(typeof(location) == typeof('str')){
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location = {
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path: path,
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method: (this.__location && this.__location.method)
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|| this.config['default-load-method'],
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current: this.current,
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}
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// got an object...
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} else {
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// clone the location...
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location = JSON.parse(JSON.stringify(location))
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}
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var method = location.method
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|| this.location.method
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|| this.config['default-load-method']
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var cur = location.current
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var path = location.path
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// normalize path if it's not root...
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if(path != '/' && path != '\\'){
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path = location.path = util.normalizePath(path)
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}
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// XXX ???
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//this.__location = location
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// NOTE: the method should set the proper location if it uses .clear()...
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var res = method && this[method](path)
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// load current...
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if(cur){
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if(res && res.then != null){
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var that = this
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res.then(function(){
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that.current = cur
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})
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} else {
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this.current = cur
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}
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}
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return res
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}],
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// XXX
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// XXX should these have the same effect as .dispatch('location:*:load', location)???
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// ...another way to put it is should we call this from dispatch?
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// ...feels like yes -- this will turn into another Action-like
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// protocol...
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// ...or we can use this to wrap the actual matching action...
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_loadLocation: ['- File/Save location',
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{protocol: 'location:*:load'},
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function(location){
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this.location.method = this.locationMethod(location)
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this.dispatch('location:*:load', location)
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}],
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_saveLocation: ['- File/Save location',
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{protocol: 'location:*:save'},
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function(location){
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this.location.method = this.locationMethod(location)
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this.dispatch('location:*:save', location) }],
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_locationMethod: ['- File/',
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{protocol: 'location:?'},
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function(location){
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return (location || this.location).method || null }],
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// format:
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// {
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// 'protocol:method': 'actionName',
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//
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// 'family:protocol:method': 'actionName',
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//
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// 'family:*': 'actionName',
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// ...
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// }
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get protocols(){
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var cache = this.__location_protocol_cache = this.__location_protocol_cache
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|| this.cacheProtocols()
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return cache
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},
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cacheProtocols: ['- File/',
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function(){
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var that = this
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var res = {}
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this.actions.forEach(function(n){
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var proto = that.getActionAttr(n, 'protocol')
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if(proto){
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res[proto] = n
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}
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})
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return res
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}],
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// XXX how do we call the dispatched actions and all the matching
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// pattern actions???
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// One way to go would be:
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// .dispatch('location:*:save', ..)
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// -> 'location:?' - get the default for '*'
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// -> 'location:*:save' (pre)
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// -> 'location:file:save' - forms the return value
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// -> 'location:*:save' (post)
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//
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// ...this should the same as calling (???):
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// .loadLocation(..)
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// XXX sanity check: how is this different for what Action(..) does???
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// ...the only thing this adds is a way not to call some of the
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// overloading actions via a simple pattern matching mechanism...
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// Example:
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// .dispatch('location:file:save', ..)
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// -> calls only the "save" actions that match the
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// location:file protocol ignoring all other
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// implementations...
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// ...for pure actions this is also possible by manually checking
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// some condition and doing nothing if not matched...
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dispatch: ['- File/',
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core.doc`
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Execute command in specific protocol...
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.dispatch('protocol:command', ..)
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.dispatch('family:protocol:command', ..)
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-> result
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XXX defaults...
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XXX introspection...
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`,
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function(spec){
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var args = [].slice.call(arguments, 1)
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spec = spec instanceof Array ? spec : spec.split(':')
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var cache = this.protocols
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var protocols = Object.keys(cache)
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// get all matching paths...
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var matches = protocols.slice()
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.map(function(p){ return p.split(':') })
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spec.forEach(function(e, i){
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matches = matches
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.filter(function(p){ return e == '*' || p[i] == e }) })
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matches = matches
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// remove matches ending with '*'... (XXX ???)
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.filter(function(p){ return p.slice(-1)[0] != '*' })
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.map(function(p){ return p.join(':') })
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// fill in the gaps...
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var i = spec.indexOf('*')
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while(spec.indexOf('*') >= 0){
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var handler = cache[spec.slice(0, i).concat('?').join(':')]
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if(handler){
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spec[i] = this[handler].apply(this, args)
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i = spec.indexOf('*')
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// error...
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// XXX how do we break out of this???
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} else {
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throw ('No default defined for: '+ spec.slice(0, i+1).join(':'))
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}
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}
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// introspection...
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// XXX this supports only one '??'
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var i = spec.indexOf('??')
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if(i >= 0){
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var head = spec.slice(0, i).join(':')
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var tail = spec.slice(i+1).join(':')
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console.log(head, tail)
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return protocols
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.filter(function(p){
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return p.startsWith(head)
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&& (tail == ''
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|| (p.endsWith(tail)
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&& p.length > (head.length + tail.length + 2))) })
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// call method...
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} else {
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var m = spec.join(':')
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console.log('>>>', m)
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// XXX take all the matches and chain call them...
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return this[cache[m]].apply(this, args)
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}
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}],
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})
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module.Location = core.ImageGridFeatures.Feature({
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title: '',
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doc: '',
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tag: 'location',
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actions: LocationActions,
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handlers: [
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['clone',
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function(res){
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if(this.location){
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res.__location = JSON.parse(JSON.stringify(this.__location))
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}
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}],
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['clear',
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function(){ this.clearLoaction() }],
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// 1) store .location
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// 2) cleanup .images[..].base_path
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//
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// XXX might be good to make the .base_path relative to location
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// if possible...
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// XXX not sure if this is the right place for .images[..].base_path
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// handling...
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['json',
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function(res){
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if(this.location){
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var l = res.location = JSON.parse(JSON.stringify(this.location))
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// cleanup base_path...
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Object.keys(res.images || {}).forEach(function(gid){
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var img = res.images[gid]
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if(l.path == img.base_path){
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delete img.base_path
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}
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})
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}
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}],
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['load',
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function(_, data){
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// NOTE: we are setting this after the load because the
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// loader may .clear() the viewer, thus clearing the
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// .location too...
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this.__location = data.location
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}],
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],
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})
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/**********************************************************************
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* vim:set ts=4 sw=4 : */ return module })
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