Initial OpenECOMP Portal commit

[portal.git] / ecomp-portal-FE / client / bower_components / jqTree / src / save_state_handler.coffee

diff --git a/ecomp-portal-FE/client/bower_components/jqTree/src/save_state_handler.coffee b/ecomp-portal-FE/client/bower_components/jqTree/src/save_state_handler.coffee
new file mode 100644 (file)
index 0000000..6581035
--- /dev/null
+++ b/ecomp-portal-FE/client/bower_components/jqTree/src/save_state_handler.coffee
@@ -0,0 +1,208 @@
+util = require './util'
+
+indexOf = util.indexOf
+isInt = util.isInt
+
+
+$ = jQuery
+
+
+class SaveStateHandler
+    constructor: (tree_widget) ->
+        @tree_widget = tree_widget
+
+    saveState: ->
+        state = JSON.stringify(@getState())
+
+        if @tree_widget.options.onSetStateFromStorage
+            @tree_widget.options.onSetStateFromStorage(state)
+        else if @supportsLocalStorage()
+            localStorage.setItem(
+                @getCookieName(),
+                state
+            )
+        else if $.cookie
+            $.cookie.raw = true
+            $.cookie(
+                @getCookieName(),
+                state,
+                {path: '/'}
+            )
+
+    getStateFromStorage: ->
+        json_data = @_loadFromStorage()
+
+        if json_data
+            return @_parseState(json_data)
+        else
+            return null
+
+    _parseState: (json_data) ->
+        state = $.parseJSON(json_data)
+
+        # Check if selected_node is an int (instead of an array)
+        if state and state.selected_node and isInt(state.selected_node)
+            # Convert to array
+            state.selected_node = [state.selected_node]
+
+        return state
+
+    _loadFromStorage: ->
+        if @tree_widget.options.onGetStateFromStorage
+            return @tree_widget.options.onGetStateFromStorage()
+        else if @supportsLocalStorage()
+            return localStorage.getItem(
+                @getCookieName()
+            )
+        else if $.cookie
+            $.cookie.raw = true
+            return $.cookie(@getCookieName())
+        else
+            return null
+
+    getState: ->
+        getOpenNodeIds = =>
+            open_nodes = []
+
+            @tree_widget.tree.iterate((node) ->
+                if (
+                    node.is_open and
+                    node.id and
+                    node.hasChildren()
+                )
+                    open_nodes.push(node.id)
+                return true
+            )
+
+            return open_nodes
+
+        getSelectedNodeIds = =>
+            return (n.id for n in @tree_widget.getSelectedNodes())
+
+        return {
+            open_nodes: getOpenNodeIds(),
+            selected_node: getSelectedNodeIds()
+        }
+
+    # Set initial state
+    # Don't handle nodes that are loaded on demand
+    #
+    # result: must load on demand
+    setInitialState: (state) ->
+        if not state
+            return false
+        else
+            must_load_on_demand = @_openInitialNodes(state.open_nodes)
+
+            @_selectInitialNodes(state.selected_node)
+
+            return must_load_on_demand
+
+    _openInitialNodes: (node_ids) ->
+        must_load_on_demand = false
+
+        for node_id in node_ids
+            node = @tree_widget.getNodeById(node_id)
+
+            if node
+                if not node.load_on_demand
+                    node.is_open = true
+                else
+                    must_load_on_demand = true
+
+        return must_load_on_demand
+
+    _selectInitialNodes: (node_ids) ->
+        select_count = 0
+
+        for node_id in node_ids
+            node = @tree_widget.getNodeById(node_id)
+
+            if node
+                select_count += 1
+
+                @tree_widget.select_node_handler.addToSelection(node)
+
+        return select_count != 0
+
+    setInitialStateOnDemand: (state, cb_finished) ->
+        if state
+            @_setInitialStateOnDemand(state.open_nodes, state.selected_node, cb_finished)
+        else
+            cb_finished()
+
+    _setInitialStateOnDemand: (node_ids, selected_nodes, cb_finished) ->
+        loading_count = 0
+
+        openNodes = =>
+            new_nodes_ids = []
+
+            for node_id in node_ids
+                node = @tree_widget.getNodeById(node_id)
+
+                if not node
+                    new_nodes_ids.push(node_id)
+                else
+                    if not node.is_loading
+                        if node.load_on_demand
+                            loadAndOpenNode(node)
+                        else
+                            @tree_widget._openNode(node, false)
+
+            node_ids = new_nodes_ids
+
+            if @_selectInitialNodes(selected_nodes)
+                @tree_widget._refreshElements()
+
+            if loading_count == 0
+                cb_finished()
+
+        loadAndOpenNode = (node) =>
+            loading_count += 1
+            @tree_widget._openNode(
+                node,
+                false,
+                ->
+                    loading_count -= 1
+                    openNodes()
+            )
+
+        openNodes()
+
+    getCookieName: ->
+        if typeof @tree_widget.options.saveState is 'string'
+            return @tree_widget.options.saveState
+        else
+            return 'tree'
+
+    supportsLocalStorage: ->
+        testSupport = ->
+            # Is local storage supported?
+            if not localStorage?
+                return false
+            else
+                # Check if it's possible to store an item. Safari does not allow this in private browsing mode.
+                try
+                    key = '_storage_test'
+                    sessionStorage.setItem(key, true)
+                    sessionStorage.removeItem(key)
+                catch error
+                    return false
+
+                return true
+
+        if not @_supportsLocalStorage?
+            @_supportsLocalStorage = testSupport()
+
+        return @_supportsLocalStorage
+
+    getNodeIdToBeSelected: ->
+        state = @getStateFromStorage()
+
+        if state and state.selected_node
+            return state.selected_node[0]
+        else
+            return null
+
+
+module.exports = SaveStateHandler