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Viewing file:     actionList.js (8.89 KB)      -rw-r--r--

/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
RED.actionList = (function() {

    var disabled = false;
    var dialog = null;
    var searchInput;
    var searchResults;
    var selected = -1;
    var visible = false;

    var filterTerm = "";
    var filterTerms = [];
    var previousActiveElement;

    function ensureSelectedIsVisible() {
        var selectedEntry = searchResults.find("li.selected");
        if (selectedEntry.length === 1) {
            var scrollWindow = searchResults.parent();
            var scrollHeight = scrollWindow.height();
            var scrollOffset = scrollWindow.scrollTop();
            var y = selectedEntry.position().top;
            var h = selectedEntry.height();
            if (y+h > scrollHeight) {
                scrollWindow.animate({scrollTop: '-='+(scrollHeight-(y+h)-10)},50);
            } else if (y<0) {
                scrollWindow.animate({scrollTop: '+='+(y-10)},50);
            }
        }
    }

    function createDialog() {
        dialog = $("<div>",{id:"red-ui-actionList",class:"red-ui-search"}).appendTo("#red-ui-main-container");
        var searchDiv = $("<div>",{class:"red-ui-search-container"}).appendTo(dialog);
        searchInput = $('<input type="text" data-i18n="[placeholder]keyboard.filterActions">').appendTo(searchDiv).searchBox({
            change: function() {
                filterTerm = $(this).val().trim();
                filterTerms = filterTerm.split(" ");
                searchResults.editableList('filter');
                searchResults.find("li.selected").removeClass("selected");
                var children = searchResults.children(":visible");
                if (children.length) {
                    $(children[0]).addClass('selected');
                }
            }
        });

        searchInput.on('keydown',function(evt) {
            var selectedChild;
            if (evt.keyCode === 40) {
                // Down
                selectedChild = searchResults.find("li.selected");
                if (!selectedChild.length) {
                    var children = searchResults.children(":visible");
                    if (children.length) {
                        $(children[0]).addClass('selected');
                    }
                } else {
                    var nextChild = selectedChild.nextAll(":visible").first();
                    if (nextChild.length) {
                        selectedChild.removeClass('selected');
                        nextChild.addClass('selected');
                    }
                }
                ensureSelectedIsVisible();
                evt.preventDefault();
            } else if (evt.keyCode === 38) {
                // Up
                selectedChild = searchResults.find("li.selected");
                var nextChild = selectedChild.prevAll(":visible").first();
                if (nextChild.length) {
                    selectedChild.removeClass('selected');
                    nextChild.addClass('selected');
                }
                ensureSelectedIsVisible();
                evt.preventDefault();
            } else if (evt.keyCode === 13) {
                // Enter
                selectedChild = searchResults.find("li.selected");
                selectCommand(searchResults.editableList('getItem',selectedChild));
            }
        });
        searchInput.i18n();

        var searchResultsDiv = $("<div>",{class:"red-ui-search-results-container"}).appendTo(dialog);
        searchResults = $('<ol>',{style:"position: absolute;top: 5px;bottom: 5px;left: 5px;right: 5px;"}).appendTo(searchResultsDiv).editableList({
            addButton: false,
            addItem: function(container,i,action) {
                if (action.id === undefined) {
                    $('<div>',{class:"red-ui-search-empty"}).text(RED._('search.empty')).appendTo(container);
                } else {
                    var div = $('<a>',{href:'#',class:"red-ui-search-result"}).appendTo(container);
                    var contentDiv = $('<div>',{class:"red-ui-search-result-action"}).appendTo(div);


                    $('<div>').text(action.label).appendTo(contentDiv);
                    // $('<div>',{class:"red-ui-search-result-node-type"}).text(node.type).appendTo(contentDiv);
                    // $('<div>',{class:"red-ui-search-result-node-id"}).text(node.id).appendTo(contentDiv);
                    if (action.key) {
                        $('<div>',{class:"red-ui-search-result-action-key"}).html(RED.keyboard.formatKey(action.key)).appendTo(contentDiv);
                    }
                    div.on("click", function(evt) {
                        evt.preventDefault();
                        selectCommand(action);
                    });
                }
            },
            scrollOnAdd: false,
            filter: function(item) {
                if (filterTerm !== "") {
                    var pos=0;
                    for (var i=0;i<filterTerms.length;i++) {
                        var j = item._label.indexOf(filterTerms[i],pos);
                        if (j > -1) {
                            pos = j;
                        } else {
                            return false;
                        }
                    }
                    return true;
                }
                return true;
            }
        });

    }

    function selectCommand(command) {
        hide();
        if (command) {
            RED.actions.invoke(command.id);
        }
    }

    function show(v) {
        if (disabled) {
            return;
        }
        if (!visible) {
            previousActiveElement = document.activeElement;
            $("#red-ui-header-shade").show();
            $("#red-ui-editor-shade").show();
            $("#red-ui-palette-shade").show();
            $("#red-ui-sidebar-shade").show();
            $("#red-ui-sidebar-separator").hide();
            if (dialog === null) {
                createDialog();
            }
            dialog.slideDown(300);
            searchInput.searchBox('value',v)
            searchResults.editableList('empty');
            results = [];
            var actions = RED.actions.list();
            actions.sort(function(A,B) {
                return A.id.localeCompare(B.id);
            });
            actions.forEach(function(action) {
                action.label = action.id.replace(/:/,": ").replace(/-/g," ").replace(/(^| )./g,function() { return arguments[0].toUpperCase()});
                action._label = action.label.toLowerCase();
                searchResults.editableList('addItem',action)
            })
            RED.events.emit("actionList:open");
            visible = true;
        }
        searchInput.trigger("focus");
        var children = searchResults.children(":visible");
        if (children.length) {
            $(children[0]).addClass('selected');
        }
    }

    function hide() {
        if (visible) {
            visible = false;
            $("#red-ui-header-shade").hide();
            $("#red-ui-editor-shade").hide();
            $("#red-ui-palette-shade").hide();
            $("#red-ui-sidebar-shade").hide();
            $("#red-ui-sidebar-separator").show();
            if (dialog !== null) {
                dialog.slideUp(200,function() {
                    searchInput.searchBox('value','');
                });
            }
            RED.events.emit("actionList:close");
            if (previousActiveElement) {
                $(previousActiveElement).trigger("focus");
                previousActiveElement = null;
            }
        }
    }

    function init() {
        RED.actions.add("core:show-action-list",show);

        RED.events.on("editor:open",function() { disabled = true; });
        RED.events.on("editor:close",function() { disabled = false; });
        RED.events.on("search:open",function() { disabled = true; });
        RED.events.on("search:close",function() { disabled = false; });
        RED.events.on("type-search:open",function() { disabled = true; });
        RED.events.on("type-search:close",function() { disabled = false; });

        RED.keyboard.add("red-ui-actionList","escape",function(){hide()});


        $("#red-ui-header-shade").on('mousedown',hide);
        $("#red-ui-editor-shade").on('mousedown',hide);
        $("#red-ui-palette-shade").on('mousedown',hide);
        $("#red-ui-sidebar-shade").on('mousedown',hide);
    }

    return {
        init: init,
        show: show,
        hide: hide
    };

})();