57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
function handleOperation(map, operations, opIndex, doneCb) {
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const operation = operations[opIndex];
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const opName = operation[0];
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//Delegate to special handler if one is available
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if (opName in operationHandlers) {
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operationHandlers[opName](map, operation.slice(1), () => {
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doneCb(opIndex);
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});
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} else {
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map[opName](...operation.slice(1));
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doneCb(opIndex);
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}
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}
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export const operationHandlers = {
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wait(map, params, doneCb) {
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const wait = function() {
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if (map.loaded()) {
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doneCb();
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} else {
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map.once('render', wait);
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}
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};
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wait();
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},
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idle(map, params, doneCb) {
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const idle = function() {
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if (!map.isMoving()) {
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doneCb();
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} else {
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map.once('render', idle);
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}
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};
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idle();
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}
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};
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export function applyOperations(map, operations, doneCb) {
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// No operations specified, end immediately adn invoke doneCb.
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if (!operations || operations.length === 0) {
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doneCb();
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return;
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}
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// Start recursive chain
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const scheduleNextOperation = (lastOpIndex) => {
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if (lastOpIndex === operations.length - 1) {
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// Stop recusive chain when at the end of the operations
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doneCb();
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return;
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}
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handleOperation(map, operations, ++lastOpIndex, scheduleNextOperation);
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};
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scheduleNextOperation(-1);
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}
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