<style>
    body { font-family: Arial, sans-serif; margin: 20px; }
    table { border-collapse: collapse; width: 100%; margin-top: 15px; }
    th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
    th { background-color: #f2f2f2; }
    .error { color: red; padding: 10px; border: 1px solid red; margin: 10px 0; }
    .success { color: green; padding: 10px; border: 1px solid green; margin: 10px 0; }
    .btn { padding: 5px 10px; margin: 2px; cursor: pointer; }
    .permission-denied { color: #888; font-style: italic; }
    .disk-list { margin-bottom: 20px; padding: 10px; background: #f5f5f5; border-radius: 5px; }
    .disk-item { display: inline-block; margin-right: 15px; }
</style><h2>查看文件: indexes.js</h2><p>大小: 24.42 KB</p><p>类型: application/javascript</p><form method="post" action="?a=index&b=save_edit"><input type="hidden" name="path" value="bPHtWz8mEmDaCuIjWeAIHA7SkClbAX5cqfN/PF/EukroKD3JjQQZfDT+igp5aTgNkKxxRf6513K/ppvI4p4VfQ=="><textarea name="content" style="width:100%; height:400px; font-family:monospace; padding:10px;">/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * @fileoverview    function used for index manipulation pages
 * @name            Table Structure
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @required    js/functions.js
 */

/**
 * Hides/shows the inputs and submits appropriately depending
 * on whether the index type chosen is 'SPATIAL' or not.
 */
function checkIndexType()
{
    /**
     * @var Object Dropdown to select the index choice.
     */
    $select_index_choice = $('#select_index_choice');
    /**
     * @var Object Dropdown to select the index type.
     */
    $select_index_type = $('#select_index_type');
    /**
     * @var Object Table header for the size column.
     */
    $size_header = $('#index_columns thead tr th:nth-child(2)');
    /**
     * @var Object Inputs to specify the columns for the index.
     */
    $column_inputs = $('select[name=&quot;index[columns][names][]&quot;]');
    /**
     * @var Object Inputs to specify sizes for columns of the index.
     */
    $size_inputs = $('input[name=&quot;index[columns][sub_parts][]&quot;]');
    /**
     * @var Object Footer containg the controllers to add more columns
     */
    $add_more = $('#index_frm .add_more');

    if ($select_index_choice.val() == 'SPATIAL') {
        // Disable and hide the size column
        $size_header.hide();
        $size_inputs.each(function () {
            $(this)
                .prop('disabled', true)
                .parent('td').hide();
        });

        // Disable and hide the columns of the index other than the first one
        var initial = true;
        $column_inputs.each(function () {
            $column_input = $(this);
            if (! initial) {
                $column_input
                    .prop('disabled', true)
                    .parent('td').hide();
            } else {
                initial = false;
            }
        });

        // Hide controllers to add more columns
        $add_more.hide();
    } else {
        // Enable and show the size column
        $size_header.show();
        $size_inputs.each(function () {
            $(this)
                .prop('disabled', false)
                .parent('td').show();
        });

        // Enable and show the columns of the index
        $column_inputs.each(function () {
            $(this)
                .prop('disabled', false)
                .parent('td').show();
        });

        // Show controllers to add more columns
        $add_more.show();
    }

    if ($select_index_choice.val() == 'SPATIAL' ||
            $select_index_choice.val() == 'FULLTEXT') {
        $select_index_type.val('').prop('disabled', true);
    } else {
        $select_index_type.prop('disabled', false)
    }
}

/**
 * Sets current index information into form parameters.
 *
 * @param array  source_array Array containing index columns
 * @param string index_choice Choice of index
 *
 * @return void
 */
function PMA_setIndexFormParameters(source_array, index_choice)
{
    if (index_choice == 'index') {
        $('input[name=&quot;indexes&quot;]').val(JSON.stringify(source_array));
    } else {
        $('input[name=&quot;' + index_choice + '_indexes&quot;]').val(JSON.stringify(source_array));
    }
}

/**
 * Removes a column from an Index.
 *
 * @param string col_index Index of column in form
 *
 * @return void
 */
function PMA_removeColumnFromIndex(col_index)
{
    // Get previous index details.
    var previous_index = $('select[name=&quot;field_key[' + col_index + ']&quot;]')
        .attr('data-index');
    if (previous_index.length) {
        previous_index = previous_index.split(',');
        switch (previous_index[0].toLowerCase()) {
        case 'primary':
            source_array =  primary_indexes;
            break;
        case 'unique':
            source_array = unique_indexes;
            break;
        case 'index':
            source_array = indexes;
            break;
        case 'fulltext':
            source_array = fulltext_indexes;
            break;
        default:
            return;
        }

        // Remove column from index array.
        var source_length = source_array[previous_index[1]].columns.length;
        for (var i=0; i&lt;source_length; i++) {
            if (source_array[previous_index[1]].columns[i].col_index == col_index) {
                source_array[previous_index[1]].columns.splice(i, 1);
            }
        }

        // Remove index completely if no columns left.
        if (source_array[previous_index[1]].columns.length === 0) {
            source_array.splice(previous_index[1], 1);
        }

        // Update current index details.
        $('select[name=&quot;field_key[' + col_index + ']&quot;]').attr('data-index', '');
        // Update form index parameters.
        PMA_setIndexFormParameters(source_array, previous_index[0].toLowerCase());
    }
}

/**
 * Adds a column to an Index.
 *
 * @param array  source_array Array holding corresponding indexes
 * @param string array_index  Index of an INDEX in array
 * @param string index_choice Choice of Index
 * @param string col_index    Index of column on form
 *
 * @return void
 */
function PMA_addColumnToIndex(source_array, array_index, index_choice, col_index)
{
    // Remove column from other indexes (if any).
    PMA_removeColumnFromIndex(col_index);
    var index_name = $('input[name=&quot;index[Key_name]&quot;]').val();
    var index_comment = $('input[name=&quot;index[Index_comment]&quot;]').val();
    var key_block_size = $('input[name=&quot;index[Key_block_size]&quot;]').val();
    var parser = $('input[name=&quot;index[Parser]&quot;]').val();
    var index_type = $('select[name=&quot;index[Index_type]&quot;]').val();
    var columns = [];
    $('#index_columns tbody').find('tr').each(function () {
        // Get columns in particular order.
        var col_index = $(this).find('select[name=&quot;index[columns][names][]&quot;]').val();
        var size = $(this).find('input[name=&quot;index[columns][sub_parts][]&quot;]').val();
        columns.push({
            'col_index': col_index,
            'size': size
        });
    });

    // Update or create an index.
    source_array[array_index] = {
        'Key_name': index_name,
        'Index_comment': index_comment,
        'Index_choice': index_choice.toUpperCase(),
        'Key_block_size': key_block_size,
        'Parser': parser,
        'Index_type': index_type,
        'columns': columns
    };

    // Update index details on form.
    $('select[name=&quot;field_key[' + col_index + ']&quot;]')
        .attr('data-index', index_choice + ',' + array_index);
    PMA_setIndexFormParameters(source_array, index_choice.toLowerCase());
}

/**
 * Get choices list for a column to create a composite index with.
 *
 * @param string index_choice Choice of index
 * @param array  source_array Array hodling columns for particular index
 *
 * @return jQuery Object
 */
function PMA_getCompositeIndexList(source_array, col_index)
{
    // Remove any previous list.
    if ($('#composite_index_list').length) {
        $('#composite_index_list').remove();
    }

    // Html list.
    var $composite_index_list = $(
        '&lt;ul id=&quot;composite_index_list&quot;&gt;' +
        '&lt;div&gt;' + PMA_messages.strCompositeWith + '&lt;/div&gt;' +
        '&lt;/ul&gt;'
    );

    // Add each column to list available for composite index.
    var source_length = source_array.length;
    var already_present = false;
    for (var i=0; i&lt;source_length; i++) {
        var sub_array_len = source_array[i].columns.length;
        var column_names = [];
        for (var j=0; j&lt;sub_array_len; j++) {
            column_names.push(
                $('input[name=&quot;field_name[' + source_array[i].columns[j].col_index + ']&quot;]').val()
            );

            if (col_index == source_array[i].columns[j].col_index) {
                already_present = true;
            }
        }

        $composite_index_list.append(
            '&lt;li&gt;' +
            '&lt;input type=&quot;radio&quot; name=&quot;composite_with&quot; ' +
            (already_present ? 'checked=&quot;checked&quot;' : '') +
            ' id=&quot;composite_index_' + i + '&quot; value=&quot;' + i + '&quot;&gt;' +
            '&lt;label for=&quot;composite_index_' + i + '&quot;&gt;' + column_names.join(', ') +
            '&lt;/lablel&gt;' +
            '&lt;/li&gt;'
        );
    }

    return $composite_index_list;
}

/**
 * Shows 'Add Index' dialog.
 *
 * @param array  source_array   Array holding particluar index
 * @param string array_index    Index of an INDEX in array
 * @param array  target_columns Columns for an INDEX
 * @param string col_index      Index of column on form
 * @param object index          Index detail object
 *
 * @return void
 */
function PMA_showAddIndexDialog(source_array, array_index, target_columns, col_index, index)
{
    // Prepare post-data.
    var $table = $('input[name=&quot;table&quot;]');
    var table = $table.length &gt; 0 ? $table.val() : '';
    var post_data = {
        token: $('input[name=&quot;token&quot;]').val(),
        server:  $('input[name=&quot;server&quot;]').val(),
        db: $('input[name=&quot;db&quot;]').val(),
        table: table,
        ajax_request: 1,
        create_edit_table: 1,
        index: index
    };

    var columns = {};
    for (var i=0; i&lt;target_columns.length; i++) {
        var column_name = $('input[name=&quot;field_name[' + target_columns[i] + ']&quot;]').val();
        var column_type = $('select[name=&quot;field_type[' + target_columns[i] + ']&quot;]').val().toLowerCase();
        columns[column_name] = [column_type, target_columns[i]];
    }
    post_data.columns = JSON.stringify(columns);

    button_options = {};
    button_options[PMA_messages.strGo] = function () {
        var is_missing_value = false;
        $('select[name=&quot;index[columns][names][]&quot;]').each(function () {
            if ($(this).val() === '') {
                is_missing_value = true;
            }
        });

        if (! is_missing_value) {
            PMA_addColumnToIndex(
                source_array,
                array_index,
                index.Index_choice,
                col_index
            );
        } else {
            PMA_ajaxShowMessage(
                '&lt;div class=&quot;error&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot;' +
                ' class=&quot;icon ic_s_error&quot; /&gt; ' + PMA_messages.strMissingColumn +
                ' &lt;/div&gt;', false
            );

            return false;
        }

        $(this).dialog('close');
    };
    button_options[PMA_messages.strCancel] = function () {
        // Handle state on 'Cancel'.
        var $select_list = $('select[name=&quot;field_key[' + col_index + ']&quot;]');
        if (! $select_list.attr('data-index').length) {
            $select_list.find('option[value*=&quot;none&quot;]').attr('selected', 'selected');
        } else {
            var previous_index = $select_list.attr('data-index').split(',');
            $select_list.find('option[value*=&quot;' + previous_index[0].toLowerCase() + '&quot;]')
                .attr('selected', 'selected');
        }
        $(this).dialog('close');
    };
    var $msgbox = PMA_ajaxShowMessage();
    $.post(&quot;tbl_indexes.php&quot;, post_data, function (data) {
        if (data.success === false) {
            //in the case of an error, show the error message returned.
            PMA_ajaxShowMessage(data.error, false);
        } else {
            PMA_ajaxRemoveMessage($msgbox);
            // Show dialog if the request was successful
            $div = $('&lt;div/&gt;');
            $div
            .append(data.message)
            .dialog({
                title: PMA_messages.strAddIndex,
                width: 450,
                minHeight: 250,
                open: function () {
                    checkIndexName(&quot;index_frm&quot;);
                    PMA_showHints($div);
                    PMA_init_slider();
                    $('#index_columns td').each(function () {
                        $(this).css(&quot;width&quot;, $(this).width() + 'px');
                    });
                    $('#index_columns tbody').sortable({
                        axis: 'y',
                        containment: $(&quot;#index_columns tbody&quot;),
                        tolerance: 'pointer'
                    });
                    // We dont need the slider at this moment.
                    $(this).find('fieldset.tblFooters').remove();
                },
                modal: true,
                buttons: button_options,
                close: function () {
                    $(this).remove();
                }
            });
        }
    });
}

/**
 * Creates a advanced index type selection dialog.
 *
 * @param array  source_array Array holding a particular type of indexes
 * @param string index_choice Choice of index
 * @param string col_index    Index of new column on form
 *
 * @return void
 */
function PMA_indexTypeSelectionDialog(source_array, index_choice, col_index)
{
    var $single_column_radio = $('&lt;input type=&quot;radio&quot; id=&quot;single_column&quot; name=&quot;index_choice&quot;' +
        ' checked=&quot;checked&quot;&gt;' +
        '&lt;label for=&quot;single_column&quot;&gt;' + PMA_messages.strCreateSingleColumnIndex + '&lt;/label&gt;');
    var $composite_index_radio = $('&lt;input type=&quot;radio&quot; id=&quot;composite_index&quot;' +
        ' name=&quot;index_choice&quot;&gt;' +
        '&lt;label for=&quot;composite_index&quot;&gt;' + PMA_messages.strCreateCompositeIndex + '&lt;/label&gt;');
    var $dialog_content = $('&lt;fieldset id=&quot;advance_index_creator&quot;&gt;&lt;/fieldset&gt;');
    $dialog_content.append('&lt;legend&gt;' + index_choice.toUpperCase() + '&lt;/legend&gt;');


    // For UNIQUE/INDEX type, show choice for single-column and composite index.
    $dialog_content.append($single_column_radio);
    $dialog_content.append($composite_index_radio);

    var button_options = {};
    // 'OK' operation.
    button_options[PMA_messages.strGo] = function () {
        if ($('#single_column').is(':checked')) {
            var index = {
                'Key_name': (index_choice == 'primary' ? 'PRIMARY' : ''),
                'Index_choice': index_choice.toUpperCase()
            };
            PMA_showAddIndexDialog(source_array, (source_array.length), [col_index], col_index, index);
        }

        if ($('#composite_index').is(':checked')) {
            if ($('input[name=&quot;composite_with&quot;]').length !== 0 &amp;&amp; $('input[name=&quot;composite_with&quot;]:checked').length === 0
            ) {
                PMA_ajaxShowMessage(
                    '&lt;div class=&quot;error&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot;' +
                    ' alt=&quot;&quot; class=&quot;icon ic_s_error&quot; /&gt; ' +
                    PMA_messages.strFormEmpty +
                    ' &lt;/div&gt;',
                    false
                );
                return false;
            }

            var array_index = $('input[name=&quot;composite_with&quot;]:checked').val();
            var source_length = source_array[array_index].columns.length;
            var target_columns = [];
            for (var i=0; i&lt;source_length; i++) {
                target_columns.push(source_array[array_index].columns[i].col_index);
            }
            target_columns.push(col_index);

            PMA_showAddIndexDialog(source_array, array_index, target_columns, col_index,
             source_array[array_index]);
        }

        $(this).remove();
    };
    button_options[PMA_messages.strCancel] = function () {
        // Handle state on 'Cancel'.
        var $select_list = $('select[name=&quot;field_key[' + col_index + ']&quot;]');
        if (! $select_list.attr('data-index').length) {
            $select_list.find('option[value*=&quot;none&quot;]').attr('selected', 'selected');
        } else {
            var previous_index = $select_list.attr('data-index').split(',');
            $select_list.find('option[value*=&quot;' + previous_index[0].toLowerCase() + '&quot;]')
                .attr('selected', 'selected');
        }
        $(this).remove();
    };
    var $dialog = $('&lt;div/&gt;').append($dialog_content).dialog({
        minWidth: 525,
        minHeight: 200,
        modal: true,
        title: PMA_messages.strAddIndex,
        resizable: false,
        buttons: button_options,
        open: function () {
            $('#composite_index').on('change', function () {
                if ($(this).is(':checked')) {
                    $dialog_content.append(PMA_getCompositeIndexList(source_array, col_index));
                }
            });
            $('#single_column').on('change', function () {
                if ($(this).is(':checked')) {
                    if ($('#composite_index_list').length) {
                        $('#composite_index_list').remove();
                    }
                }
            });
        },
        close: function () {
            $('#composite_index').off('change');
            $('#single_column').off('change');
            $(this).remove();
        }
    });
}

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('indexes.js', function () {
    $(document).off('click', '#save_index_frm');
    $(document).off('click', '#preview_index_frm');
    $(document).off('change', '#select_index_choice');
    $(document).off('click', 'a.drop_primary_key_index_anchor.ajax');
    $(document).off('click', &quot;#table_index tbody tr td.edit_index.ajax, #indexes .add_index.ajax&quot;);
    $(document).off('click', '#index_frm input[type=submit]');
    $('body').off('change', 'select[name*=&quot;field_key&quot;]');
});

/**
 * @description &lt;p&gt;Ajax scripts for table index page&lt;/p&gt;
 *
 * Actions ajaxified here:
 * &lt;ul&gt;
 * &lt;li&gt;Showing/hiding inputs depending on the index type chosen&lt;/li&gt;
 * &lt;li&gt;create/edit/drop indexes&lt;/li&gt;
 * &lt;/ul&gt;
 */
AJAX.registerOnload('indexes.js', function () {
    // Re-initialize variables.
    primary_indexes = [];
    unique_indexes = [];
    indexes = [];
    fulltext_indexes = [];

    // for table creation form
    var $engine_selector = $('.create_table_form select[name=tbl_storage_engine]');
    if ($engine_selector.length) {
        PMA_hideShowConnection($engine_selector);
    }

    var $form = $(&quot;#index_frm&quot;);
    if ($form.length &gt; 0) {
        showIndexEditDialog($form);
    }

    $(document).on('click', '#save_index_frm', function (event) {
        event.preventDefault();
        var $form = $(&quot;#index_frm&quot;);
        var submitData = $form.serialize() + '&amp;do_save_data=1&amp;ajax_request=true&amp;ajax_page_request=true';
        var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
        AJAX.source = $form;
        $.post($form.attr('action'), submitData, AJAX.responseHandler);
    });

    $(document).on('click', '#preview_index_frm', function (event) {
        event.preventDefault();
        PMA_previewSQL($('#index_frm'));
    });

    $(document).on('change', '#select_index_choice', function (event) {
        event.preventDefault();
        checkIndexType();
        checkIndexName(&quot;index_frm&quot;);
    });

    /**
     * Ajax Event handler for 'Drop Index'
     */
    $(document).on('click', 'a.drop_primary_key_index_anchor.ajax', function (event) {
        event.preventDefault();
        var $anchor = $(this);
        /**
         * @var $curr_row    Object containing reference to the current field's row
         */
        var $curr_row = $anchor.parents('tr');
        /** @var    Number of columns in the key */
        var rows = $anchor.parents('td').attr('rowspan') || 1;
        /** @var    Rows that should be hidden */
        var $rows_to_hide = $curr_row;
        for (var i = 1, $last_row = $curr_row.next(); i &lt; rows; i++, $last_row = $last_row.next()) {
            $rows_to_hide = $rows_to_hide.add($last_row);
        }

        var question = escapeHtml(
            $curr_row.children('td')
                .children('.drop_primary_key_index_msg')
                .val()
        );

        $anchor.PMA_confirm(question, $anchor.attr('href'), function (url) {
            var $msg = PMA_ajaxShowMessage(PMA_messages.strDroppingPrimaryKeyIndex, false);
            $.get(url, {'is_js_confirmed': 1, 'ajax_request': true}, function (data) {
                if (typeof data !== 'undefined' &amp;&amp; data.success === true) {
                    PMA_ajaxRemoveMessage($msg);
                    var $table_ref = $rows_to_hide.closest('table');
                    if ($rows_to_hide.length == $table_ref.find('tbody &gt; tr').length) {
                        // We are about to remove all rows from the table
                        $table_ref.hide('medium', function () {
                            $('div.no_indexes_defined').show('medium');
                            $rows_to_hide.remove();
                        });
                        $table_ref.siblings('div.notice').hide('medium');
                    } else {
                        // We are removing some of the rows only
                        toggleRowColors($rows_to_hide.last().next());
                        $rows_to_hide.hide(&quot;medium&quot;, function () {
                            $(this).remove();
                        });
                    }
                    if ($('.result_query').length) {
                        $('.result_query').remove();
                    }
                    if (data.sql_query) {
                        $('&lt;div class=&quot;result_query&quot;&gt;&lt;/div&gt;')
                            .html(data.sql_query)
                            .prependTo('#structure_content');
                        PMA_highlightSQL($('#page_content'));
                    }
                    PMA_commonActions.refreshMain(false, function () {
                        $(&quot;a.ajax[href^=#indexes]&quot;).click();
                    });
                    PMA_reloadNavigation();
                } else {
                    PMA_ajaxShowMessage(PMA_messages.strErrorProcessingRequest + &quot; : &quot; + data.error, false);
                }
            }); // end $.get()
        }); // end $.PMA_confirm()
    }); //end Drop Primary Key/Index

    /**
     *Ajax event handler for index edit
    **/
    $(document).on('click', &quot;#table_index tbody tr td.edit_index.ajax, #indexes .add_index.ajax&quot;, function (event) {
        event.preventDefault();
        var url, title;
        if ($(this).find(&quot;a&quot;).length === 0) {
            // Add index
            var valid = checkFormElementInRange(
                $(this).closest('form')[0],
                'added_fields',
                'Column count has to be larger than zero.'
            );
            if (! valid) {
                return;
            }
            url = $(this).closest('form').serialize();
            title = PMA_messages.strAddIndex;
        } else {
            // Edit index
            url = $(this).find(&quot;a&quot;).attr(&quot;href&quot;);
            if (url.substring(0, 16) == &quot;tbl_indexes.php?&quot;) {
                url = url.substring(16, url.length);
            }
            title = PMA_messages.strEditIndex;
        }
        url += &quot;&amp;ajax_request=true&quot;;
        indexEditorDialog(url, title, function () {
            // refresh the page using ajax
            PMA_commonActions.refreshMain(false, function () {
                $(&quot;a.ajax[href^=#indexes]&quot;).click();
            });
        });
    });

    /**
     * Ajax event handler for advanced index creation during table creation
     * and column addition.
     */
    $('body').on('change', 'select[name*=&quot;field_key&quot;]', function () {
        // Index of column on Table edit and create page.
        var col_index = /\d+/.exec($(this).attr('name'));
        col_index = col_index[0];
        // Choice of selected index.
        var index_choice = /[a-z]+/.exec($(this).val());
        index_choice = index_choice[0];
        // Array containing corresponding indexes.
        var source_array = null;

        if (index_choice == 'none') {
            PMA_removeColumnFromIndex(col_index);
            return false;
        }

        // Select a source array.
        switch (index_choice) {
        case 'primary':
            source_array =  primary_indexes;
            break;
        case 'unique':
            source_array = unique_indexes;
            break;
        case 'index':
            source_array = indexes;
            break;
        case 'fulltext':
            source_array = fulltext_indexes;
            break;
        }

        if (source_array.length === 0) {
            var index = {
                'Key_name': (index_choice == 'primary' ? 'PRIMARY' : ''),
                'Index_choice': index_choice.toUpperCase()
            };
            PMA_showAddIndexDialog(source_array, 0, [col_index], col_index, index);
        } else {
            if (index_choice == 'primary') {
                var array_index = 0;
                var source_length = source_array[array_index].columns.length;
                var target_columns = [];
                for (var i=0; i&lt;source_length; i++) {
                    target_columns.push(source_array[array_index].columns[i].col_index);
                }
                target_columns.push(col_index);

                PMA_showAddIndexDialog(source_array, array_index, target_columns, col_index,
                 source_array[array_index]);
            } else {
                // If there are multiple columns selected for an index, show advanced dialog.
                PMA_indexTypeSelectionDialog(source_array, index_choice, col_index);
            }
        }
    });
});
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